Apple Bloom came running to Tender Taps on the way to dance class that afternoon. His day had been a mixed bag: on one hoof, he was covered up again with tight fabric underneath some day clothes, so his sensitive fur and skin weren't bothering him too much.

On the other hoof, he'd been getting hard and slick all day. Every little thing set him off: a flick of the tail from the girl sitting in front of him, a quiet 'Hmm' during lunch when one of his classmates ate something really tasty, apparently, even the smell of the soap the girls used was enough to make his pants bulge. He kept having to reach in and tuck his cock up properly, so it would point up and not out. At least it went down normally.

The pre was the worst of it. Every single recess, he'd dashed off to the restroom and dabbed his tip with some toilet paper, desperate to get the dripping to stop. It only worked for so long, though; he was a bottomless well now.

Apple Bloom's eyes widened when she saw him. She smiled at first, but when she saw him glaring accusingly at her, she bit her lip. "Hey, Tender."

"Hello, Apple Bloom. Notice anything different today?"

She flinched. "This is my fault, isn't it?"

He snorted. "You told me it was safe. You told me it wouldn't make me grow."

The girl clenched her eyes shut and wiped away some dirt that was definitely not a tear. "I thought it was, I didn't mean for this to happen. I can't tell you how sorry I am, Tender, I didn't mean for you to get like this. I think my ingredients might have gotten contaminated with Poison Joke."

"Wait, you poisoned me?"

"No, no, Poison Joke ain't actual poison. It's a magical plant, and it pulls pranks. It does different things to different ponies. I guess it made you big and buff for some reason."

"You knew those treats might have been doing this. You wanted me to get this... this big and freakish." He pouted.

She sighed. "I guess maybe I did, a little bit. But it's okay, there's antidotes to Poison Joke. You can get it at the spa, it happens all the time."

He looked down at the ground. His loins stirred again. "So was this really an accident, then, or was it on purpose?"

"No, it was an accident, I swear! I'd never do something like this to you. You're my friend. I like you." She stepped closer and wrapped her arms around him, squeezing that hard muscle and the thobbing veins underneath. "I wouldn't lie to you, or trick you like that. And the truth is, I do like you the way you are now. But I liked you the way you were before, too. I'm sorry for turning you into this without givin' you a choice, Tender, and I'm even more sorry for making you think I wouldn't like you otherwise. But you can get this fixed, now that we know what it is." She backed up and let him go. "Besides, you don't look half bad. Lots of ponies wear clothes all the time, and now you can really show off your, umm, assets."

Tender felt her eyes wander to the bulge between his legs again. He'd been trying to keep it in all day, silly thing. He'd only put on his wrestling gear because the air on his bits was driving him nuts, even with clothes on. But her look filled him with something besides that insistent tingling that had plagued him the past few days. He didn't just feel warm inside, he felt happy.

He looked good, to her. She liked him.

He was a good boy now. A big boy. For her.

"I guess it could be worse. Ponies are gonna stare at me when I dance now."

"In a good way, though," she replied.

"Yeah. It's not that terrible."

Apple Bloom chuckled.

"What?"

"Say that again." Apple Bloom curiously stroked a vein that had popped up on his neck.

He blushed and shivered, his cock bulging enough that he had to quickly adjust it for the umpteenth time that day. "What? Ponies are gonna stare at me?"

"The other part."

"It's not that terrible."

Apple Bloom almost cried at that. Tender Taps didn't even realise it. When he finally did, his heart skipped a beat.

"Terrible, terrifying, tragic," he tried. "Tipping, tight, huh?"

Apple Bloom shook her head and backed up. "Tender?"

"Terrible, terrified... my stutter's gone! How did that happen?"

The filly shrugged. "I guess whatever clicked in your body's given your mind a click, too."

"Must be. Wow. This is kinda weird. But it's nice, too. So what happens now?"

She looked away. "Now, I think you'd better lay off the bon bons. And ask the spa ponies about Poison Joke antidote, before it decides to pull another prank on ya. Who knows, maybe they can get it out of your system and still keep you a little buff."

He flexed his arms and groaned in pleasure. He could feel the dampness on his wrestling singlet as another droplet of that slick liquid crept out, hidden by his loose shorts.

Apple Bloom licked her lips. "And, umm, you know, if you do stay buff like that, if you want to, I mean, I wouldn't mind letting you show off sometime. Get some more practice on the farm, work those firm haunches. You could practise your lifts with me. I ain't like those featherweight dancing gals, you'd get a good workout with me. Like, say, maybe this afternoon?"

"I'd like that. But not too much, okay? I might still be getting sick."

She wiped his mane up and kissed his forehead again. He felt her tongue lap over his scalp as she did, and he idly wondered if maybe he should get a manecut. He was sure he'd been rubbing something over his forehead in his sleep, but he couldn't think of what.

"You are a little hotter than before. I'm sorry, Tender, I think you'd better just let whatever is bothering you happen and sick it out. It's probably just a flu or something. I shouldn't have meddled."

He leaned forward and nuzzled her, before resting a tree trunk of an arm on her. She practically melted under him, her nose curling as she caught a better whiff of his scent.

"You were just looking out for me. That's what friends do. Speaking of which, friends don't let friends be late." Before he even realised what he was doing, he slapped her on her butt.

She jumped and resumed her pace. "Oh, hey, don't get too frisky, Mister. Somepony might see."

Right. Good boys show off their bodies, but only to the right ponies.

Wait. Is that me thinking or is that the treats?

Good boys listen to their bodies.

But is this my body talking or me?

"Looks like it's closed for the day."

He shook his head and checked the notice on the front door of the studio. "Closed due to sickness."

"Guess whatever you've got is goin' around," Apple Bloom said. "I've been feeling a little toastier than usual myself."

"Are you sure you want to practise bucking with me, then?"

"Sure I'm sure. I'd rather have somepony I trust close by, and I don't wanna bug my sister when she's busy. Why don't you go and get your massage appointment a little early, and we'll meet up at Sweet Apple Acres, back at my clubhouse. Get your blood flowing right again before we do any heavy bucking."

Good boys do as they're told.

"Okay. I'm sure Aloe won't mind. I'll see you in a little bit, then."

Tender trudged through the doors of the spa, trying not to draw any unwanted attention.

Aloe was behind the counter, waiting for him. "Tender Taps. You are early."

"Yeah, dance class was cancelled. Something's been going around, I guess."

"Oh, I'm sure it's nothing." She led the way to the back room again, where all the dreamcatchers hung. She patted the table and he hopped on. "Now, what would you like today?"

"Err... I've got one more session on my card, right?"

"Yes, you do."

"Umm, Apple Bloom told me she might have accidentally given me Poison Joke, and you have the antidote to it. Could I have that, please?"

Aloe tilted her head at him. "You wish to be rid of this physique? You do not like it?"

He gulped. "It's not that I don't like it, it's just not me. It's not right for me. I want to be myself again." He winced as his cock pulsed again.

Aloe smiled and nodded. "Take your clothes off and lie on your belly, I will take care of everything."

He took off his T-shirt and shorts, then unzipped his sports gear. "So you can fix me?"

Aloe nodded again, fetching a machine from the corner. It looked like a box with a tube attached, one that ended in a hard plastic case that was open on one side. "I know exactly what to do. Just lie back."

He turned to lie on his belly, and his cock was pressed between his body and the table.

Then the touch to his temples came, and he was lost.

Good boys obey.

"Whoa, I dun... I feel weak."

"Hmm, must be my healing touch kicking in again. You are one strong-willed boy, you know that?"

He blinked furiously, trying to wriggle his body to no avail. "Wait. What are you going to do?"

Aloe hummed. "Finish what I began, of course: complete your treatment. Make you into a good boy. A big boy."

His heart started pounding in his chest. He couldn't move, he couldn't get up. "Y-you? You did this to me?"

"Of course, silly boy. You didn't think a simple candy could cause such a magnificent growth, did you? I'm surprised you even managed to worry, with all the thoughts dancing around in your head." More strokes and rubs around his ears, and he felt a pressure building.

"N-no, stop..."

"Ah-ah, Tender. We've come too far now. Tell me, are you a good boy?"

He bit his lip and shuddered all over. His cock dripped, but he couldn't move. He was tied down by chains that didn't exist outside his own head.

"I'm a good boy."

"And what do good boys do?"

He wanted to struggle, to fight, to cry out, but all he could do was listen to himself reciting the rules that seemed so obvious before, but now seemed so obviously wrong.

"Good boys listen to their bodies. Good boys take care of their bodies. Good boys show off. Good boys make girls happy."

"Very good. And now, today, we can carry on with your final lesson: good boys get rewards."

He whimpered, his ears flattened against his head as he felt a movement underneath him. "Why? Why would you do this?"

The machine was hooked to his cocktip and secured. Before long, he felt the suction, and Aloe stroked his back to try and stop that shivering. "Your friend is not the only pony who needs good ingredients. It takes a strong stallion to produce what we need for our stocks, and dear Bulk simply cannot keep up with the demand on his own. The mares in this town really like their beauty cream, turns out. Though between you and me, I suspect they're using it for, ah, recreational purposes, mostly. Would explain why they use it up so quickly, I suppose."

His eyes widened and his mouth opened in a soundless moan. Every gentle suckle, every weak buck from his hips, more pre was harvested, milked out of him.

Aloe chuckled and patted him on the back. "Do not worry, Tender. You'll feel better after the extraction. And look on the bright side: you have a fine body now, perfect for performing. I'll wager any girl in town would want to have some fun with you once you're done. You certainly will." She tapped the tube as his pre flowed freely through it. "We can't have any contamination in our machines, unfortunately, so you'll have to look at other avenues for actual relief. Bulk has his regular customers from Canterlot, but you're a little young to be marketed like that. And we don't want the Royal Guard finding out, do we?"

"You can't do this." He finally caught enough of his breath to moan as that infernal machine pumped and sucked his aching cock dry.

"I already have. That little head of yours won't be putting up much of a fight after today." She tapped the back of his skull. "Though I will admit, you are more difficult to treat than Bulk was. Poor thing, he never quite got all his wits back after that infection spread to his brain. But you're a smart and healthy boy, and I intend to keep you that way. You'll not have to worry about that."

He managed to arch his back into the milking machine. "Somepony will notice."

The pink mare chuckled at that. "Notice what? Your sudden and extreme growth? Please. Your best friend is an apprentice potion maker, your cutie mark is in performing. Bulking up is the least a boy like you could do. Besides, this is Ponyville. A castle bursts out of the ground and it's considered normal. A little boy getting big? This town gets a fresh delivery of gossip and drama every Saturday morning. You'll blend right in."

He cried. His cock was being drained, milked of pre, and his head pounded with pleasure, but he still couldn't find any relief.

"Oh, don't look so glum, Tender Taps. This is for the spa, and it's good for you. You wouldn't want me and my sister to lose business, would you?"

He gasped as the pumping started to make his throbbing cock hurt. "This is wrong. I can't... I don't want to..."

"Oh, but you can, and you will." She knelt down in front of him and held his head in her hooves. The pain eased up, just like that.

He tensed. "Somepony will find out."

"Not from you, they won't."

Everything in his eyesight went white. His body was wracked with spasms, then went still.

"Relax, Tender Taps. You should feel honoured; not many ponies get to witness Earth pony magic used on flesh instead of soil."

Good boys listen to their bodies.

"Thaaaat's it. Let go. You poor thing, you're so tired and weak. You can't keep this up."

Good boys show off.

"No more retorts? Do you not have the strength to fight back?"

Good boys make girls happy.

"Or do you not want to fight back anymore?"

I'm a good boy.

He moaned. "Humma... good..."

Aloe smiled and pressed the tip of her hoof to his forehead. He felt a heat building in it, bleeding over through his skull into his brain. "Close enough. Now, let's move on to your final lesson, shall we? And no more objections or distractions."

"Please..." he whimpered. "Don't... I'm so tired. My head..."

She smiled at him as the warmth pushed through her hoof. "Well, I suppose you don't absolutely need to be awake for this. Rest up, little boy. When you wake, all will be well."

Tender Taps found himself naked again, at Sweet Apple Acres, rushing towards Apple Bloom in the back of the orchard, near the Cutie Mark Crusader clubhouse. How he'd gotten there, he didn't know, but he was relieved to have made it out of the spa with his mind and body intact, at least.

"How'd the massage go, Tender?" Apple Bloom asked as he galloped towards her.

It was terrible! Aloe's the one who did this to me, she's been messing with my head.

"It went okay," Tender replied as he reached her.

Wait. I didn't mean to say that. Apple Bloom?

"Nice and limber for bucking practice, then?" She led the way to some trees, he followed obediently.

Apple Bloom, listen to me. Something's going on at the spa. It's got something to do with me and Bulk. I'm not sure what it is, but it's bad, you have to get help.

"You bet. Gotta make sure these big new muscles stay nice and taut, right?"

She chuckled and blushed. "Exactly right. Now, remember: wind up your kick before you go, make sure your front hooves are steady." She took her position, presenting her rump to him.

His body moaned and bit his lip at the sight, and his cock poked out again.

Wait, no. Apple Bloom, you need to get help! I have to tell you! It's Aloe, she must have crossed some wires in my head, I can't talk anymore. Apple Bloom!

He turned his tail end on the tree and bucked at the same time she did, managing to land an apple right in front of him.

She smiled proudly at him. "Just like that."

He felt his mouth curl up in an even prouder smile. He was a good boy, and he impressed her. That's all he wanted in life, really. He bucked again, taking turns with her. His breath jerked, he wanted to laugh out loud with pure joy.

Thanks. You can't imagine how good it feels to hear that from you. Wait, no, Apple Bloom, listen to me! There's something important I have to tell you! Come on, mouth, move! I have to tell her, I have to get help, before she gets my smell in her nose again.

She sniffed the air and looked down at his package, watching his cock dangle as he bucked and kicked like a true farm pony. She winced in sympathy. "Hey, uh, your thing is poking out again."

Yes. Good, that's not normal. You know that's not normal. Come on, you know me. I'm not shameless like you. I mean, I wanna be, but... wait, no, that's not right, either. You know I cover up, Apple Bloom, you know boys are supposed to cover up.

"Do you want me to go fetch some pants for you? I'm sure I've got some mountain pants that'd fit, they don't look girly or nothin'."

Tender's body sighed and let its head hang. "Thanks. But it'll go down on its own eventually. Nopony's going to find us here, right? Nopony will see. Unless... you mind it?" He bucked again, harvesting another apple all on his own. He felt the rush of happiness flow through his heart again, trying to cloud his mind. Aloe's work, no doubt.

Apple Bloom quirked an eyebrow at it. "Of course not, I've seen that sorta thing plenty of times. But maybe you should get that checked out. There aren't any other boys in town who have that kind of problem. And from the looks of it, Aloe didn't give you the Poison Joke antidote, did she?"

The boy bit his lip. "No. Not yet. Actually, about that, I've been thinking. Do you... like me this way?"

Please say yes, please say yes, please say yes. Wait, what am I thinking? No, say no!

"What kinda silly question is that? Of course I like you; you're my friend. I like you like this, and I liked you the other way, too."

A drop of pre leaked from his cock's tip.

No. No, don't smell it, Apple Bloom, you're gonna lose control again.

She leaned in closer and took a good whiff of his musk. "Hoo, Nelly. You really do have a strong smell, you know. You should wear some perfume or something; you're gonna drive girls totally nuts if you're not careful."

You can resist it now. Yes! Come on, you have to notice something's off.

"You're not gonna... you know..." he let that sentence trail off.

"Suck it up like last time? No, I can keep my wits about me now, thanks. Farm girl, remember? I've seen critters breeding before, the smells don't bother me that much. It just takes some gettin' used to, is all. Unless, of course, you want me to be bothered?"

What are you saying? Wait, no, Apple Bloom, don't! This isn't me!

He chuckled nervously. "Why would I want you to be bothered?"

"Well, I do owe you from last time. It was wrong of me to do... that. I do want to make it up to you, and all the other stuff." She smiled. "If you go see a doctor about your thing poking out all the time, you're gonna have to let your folks know. Your mom, your dad... you might not get to dance anymore if ponies find out you're getting stiff like that all the time, even if this is just a temporary thing."

No. I can't quit dancing, it's my whole life. But you don't understand, Apple Bloom, this is Aloe's doing! Why can't I tell you?!

"So what do you suggest?"

She looked away and dug a hoof into the ground, throwing her cutest, more heart-meltingly adorable pout at him. "Umm, I don't know. To tell you the truth, I think I might have caught the same thing you have. I've been feelin' a little off, you know, down below. Kinda wet and, umm, hollow. Like I'm hungry all the time, but I can't fix it with eating."

Oh, gosh, that sounds terrible. Is there anything I can do to help?

"If there's anything I can do to help, just ask. But I can't go and do... that," Tender said, before reaching up to this throbbing head. "There's something I'm supposed to tell you. Something important."

Yes, that's it. Tell her. Tell her about Aloe, tell her about the massages.

"What is it?"

Tell her!

"I... I can't remember. It's like I dreamed it, and I couldn't write it down after I woke up."

"Aww, I really made a mess of you, didn't I?" She stroked his cheek, then over his hard neck and down his bulging shoulders. "You're such a good boy, Tender Taps. You know that, right?"

He gulped. "Yeah, I'm a good boy. I just forget sometimes."

I really am a good boy, aren't I? I never realised how happy ponies could be, because of me. It feels so nice, being appreciated. Oh, Apple Bloom, why can't I tell you?

"I'm kind of jealous, you know," Tender's body said.

"Jealous about what?"

"You, being so fearless. I could never go out on stage knowing I'd make a fool of myself. I could never embarrass myself to help a friend, let alone somepony I've only known for a few hours. I don't think I can even walk across the street like this." He looked down at his rugged chest and washboard abs, and the proud cock that crowned it all. "But you can."

She wiped away a tear at that. "Don't start gettin' all sappy on me, Tender. You're gonna get me all blushing and flustered."

You say that like it's a bad thing. You look adorable when you blush.

"And is that a bad thing?"

She pouted and shook her head. "You really can’t keep that thing in, can you?"

His cock was dripping again now, even after being milked so thoroughly. His nose caught an inviting scent that made his ears perk. He wasn't the only one leaking, for a change. "Sorry. I didn't mean to. I forgot my clothes at the spa, I think."

She looked down at the ground in shame. "Would it really be that bad if we, you know..."

"If we what?"

"If we, umm, relieved some pressure together. I like you, you like me. I don’t think you’ve got a lot of options. Don’t you want to?"

More than you know. I want to pin you down and fuck you so bad... wasn't there something I had to say?

"I don't know, Apple Bloom. Something about this feels wrong."

Wrong? Why would it be wrong? I'm a good boy. Good boys listen to their bodies. This is what my body wants. Why is it backing out now? I don't have a chicken body, do I? It's what I came here for, isn't it? I'm sure it is.

Apple Bloom smiled and turned her back on him, raising her rump towards his face and looking back. "How about now?"

He shook his head and closed his eyes. "You're not acting like yourself, Apple Bloom. There's something I was supposed to tell you, about the spa. If I can just concentrate..."

She's so cute, so open, I'll bet she feels warm and velvety smooth inside. What was I gonna say?

She turned to lie on her back so she'd be facing him. "What about now?" She raised her hooves up in a begging position. "Is this better?"

His breath caught as he leaned over her, getting into position. She reached up and stroked over his rock hard neck, before going down over his ribcage. "That's it."

"Why are you doing this? You know we shouldn't."

"Because I want to," she whined. “And so do you. I don't wanna force you, but I don't wanna leave you hanging, either. Look at you: you're shaking. The only reason you don't want to is because you think that'd make you a bad boy. But it wouldn't. Nopony would hold it against you, least of all me."

Apple Bloom, wait. I think something's wrong with my brain. I don't know what thoughts are mine and what's Aloe's. I don't know who's talking anymore, even in my own head.

He reached down and kissed her on the muzzle, before wrapping his tree trunk arms around her and thrusting in.

She moaned as he breached her walls, slowly at first, then picking up the pace and driving his cock deeper into her. He was so slick, she barely offered any resistance. She fit him like a snug costume, hugging his most tender and private part.

"That's it. That's perfect," she said with a happy sigh. "Oh, Tender. That's so much better-Hng!"

He spread her and clenched her tightly against his hard abs and chest, his hips rocking back and forth to drive ever deeper into her welcoming body.

His mind was blank as he went, just acting on instinct and programming. She bucked against him and wrapped her arms and legs around his body while he pressed her against the ground, hard enough to bruise even her hard physique.

Time lost meaning. The sounds of their panting and moaning, and the wet slaps of his thrusts against her, became dim in his mind. The smells of apples faded away.

There was only warmth, and wetness.

Only her.

He was a good boy, for her.

"Ah!" With a gasp, she clenched around his cock.

Like any good boy, he came along with her, filling her up with seed that had been building up for days. Finally, he fulfilled his purpose. Finally, he had relief. His head pounded, his eyes clenched shut. His whole body finally felt right and relaxed.

He collapsed on her when he was done, cock still twitching within her. His head felt as heavy as the rest of his muscular body now.

"Wow," Apple Bloom said. "That was somethin' else."

He managed to chuckle softly and hugged her, tensing up his abs so her round belly would squish against them. His eyes fell closed again as fatigue caught up with him.

"Aloe was right," she added.

Aloe?

He lifted himself up enough to look her in the eyes. "Aloe? What about her?"

"She's been teachin' me some Earth pony magic, didn't she tell you? When I hurt my back a while ago, she helped fix me up. And since I kinda like herbs and potions and whatnot, she's been teaching me all kinds of stuff."

"Like what?"

"Just standard stuff, potion making, mostly. And how to be a good girl. She told me you might need some relief." She pressed her forehead against his. "I'm so glad you feel better now. I couldn't live with myself, knowing I'd given you those horrible nightmares."

It finally dawned on him. He knew what he was supposed to say.

"Aloe's been teaching me, too. That's what I meant to tell you."

"Oh. Well, you coulda fooled me. You must be a really good student."

"Yeah, thanks. I'm... I'm a good boy." He let out a tired sigh. "But, anyway, she said that, if I wanted to, I could come over to spa after dance class every day now. Help out and stuff."

"That's great. We can go together, then; I've been meaning to get back into potion practice. If, you know, it's not too awkward having me around."

"If you're coming, then I'm coming. It'll be nice."

She hugged his body tightly to her, and he thrust into her again for good measure.

"This'll be great. Aloe's so smart, I'm sure we'll learn lots of new things from her," Apple Bloom said.

"Yeah... she's a great teacher." He let his head rest on her.

She patted the back of his neck. "Rest up, Tender Taps. You've earned a break."

His eyelids dropped, and his body went limp.

His mind was silent as it drifted into a dreamless sleep, save for one tiny question that only managed to keep him up for a second or two.

Why was I even worried?

The End.

Author's Note

So that was it: muscle foalcon with a smattering of mind control. Rushed and not the usual fare, but good enough to publish.

Mind control stories are odd in their possible set-ups: you can have a dominant person enslaving a submissive person (standard corruption or enslavement story), you can have a submissive controlling a dominant story (revenge mind control, pushy subs, knocking down bosses) but then you can also have a third option: someone controlling both sides of a relationship and making them, well, mate.

Reasons can vary: the controller may be away and want his subjects to feel his presence through a proxy. They may want a slower corruption, and if the victim suspects the controller it can be useful to use a detour. Or, sex isn't the objective at all. Blackmail could happen, or sex is simply an afterthought to some form of exploitation, which is the case here. Tender's changes are purely business (though Aloe seems to be enjoying herself), but she doesn't want his seed. On the other hoof, if she doesn't make sure he gets relief, production might slow or even halt entirely.

Tender Taps doesn't stutter that much in his episode, but he does it once or twice, and only on certain words (I think it was only 'terrifying'). Him being cured of it because of the corruption seemed like a nice touch. Really hammer home that sick bitch feel for the ponies behind all of this.

As for the mechanism, we've seen Earth ponies use their hooves to tend the land and make it fertile. In other properties and cultures, there's the idea of a healing touch sending positive energy into the patient's body. It's not that big a stretch to combine those and extend it to 'other' applications.

Bulk Biceps, by the way, is left open to the reader's imagination. Aloe claims he's a bit fuzzy-headed because of an infection in his childhood, but whether that's true is left open. I wouldn't go so far as to say the spa ponies made him dumb, but if that's your thing, the elements are there. At any rate, there's no reason to risk blitzing Tender's brain more than she already has, so he'll be his usual smart and dancing self... and getting milked daily. But hey, he's got Apple Bloom to keep him company, so it's all good, right?

The final shift, in case it wasn't obvious, was supposed to show the line between Tender Taps' own thoughts and his programming fade. The major drive behind that is, of course, Apple Bloom wanting him to feel better and him not wanting to be rude to her. If either one had had the strength of will to try and hurt the other to break free, it wouldn't have happened. They are effectively snared by the affections they have for each other. Standard stuff.