Applejack had hoped that maybe the dick would vanish during the night. That she'd wake up and be dick-free, 100% girl. No such luck. If anything it looked like maybe it was a bit bigger. It probably wasn't, but it felt like it. The fact that it kept deciding to switch to boner mode every time she touched it made it kind of difficult to judge the size. Of course, that might have something to do with the fact that whenever she touched it, it took all of a few seconds for the touching to turn to fondling, and the fondling to turn into whatever the hell it was that filled the gap between fondling and good-ol' masturbation. Like some sort of bizarre self-foreplay.

She chuckled. The thought of taking her dick out to a candlelit dinner before going back to her place to finally bust a nut was so far the only thing about it that had amused rather than annoyed her. She could put a little top hat on it or something. Anything was funnier when you put a tiny top hat on it. Rock? Amusing. Bunny? Amusing and adorable. Tortoise? Funny. Penis? Definitely funnier. Apple Bloom? Not all that funny, but kinda adorable. Applejack smacked herself for comparing her little sister to a penis. Hell, the words "little sister" should never even be in the same sentence as "penis".

She looked down. The damn cock still sported a raging stiffie. Most of one, at least. Maybe about 70% maximum hardness. Sure, it gave her an excuse to linger in the shower as she waited for it to go down, but she was starting to get hungry. She resisted the urge to poke it to see if it had softened any. If she touched it, it would just re-harden and she'd have to wait that much longer for breakfast. Her mind would have to get itself elsewhere.

She took the bottle of bodywash and squirted a glob onto her chest. The white goo clung slightly to her skin, slowly dribbling between her breasts. Huh, I bet that's what it would look like if I blew a load on my- oh dammit. Her dick was at full attention once again. She did her best to ignore it and began to lather herself up, rubbing the goop into her breasts, caressing them tenderly, flicking her nipples through the soapy foam that surrounded them. They began to grow harder as she fumbled them between her fingers. She sighed. She didn't even need to look down. Her nipples weren't the only things getting harder.

Must be some sorta wire-crossing thing. Shit, I wish playing with my boobs wouldn't give me a boner. You'd think my girl parts and boy parts would operate separately. She reluctantly stopped groping herself and tried to keep her hands away from touching anything that could be the slightest bit arousing. Applejack closed her eyes and focused on her hair. No nerve endings there. No one had ever gotten a boner from their hair. She hoped. Given her luck this week, it wouldn't be that surprising to discover she had a hair fetish or something.

Applejack walked slowly down the street towards the library. She had to get rid of the cock. The damn thing had been driving her crazy all day. Aside from the fact that she had be extra careful to keep it from getting hit, it was getting harder and harder to resist the urge to lock herself in the bathroom for a good, long wank. It was maddening. Her mind kept coming up with excuses for why she should just give in and rub one out. "The cock hasn't been anything but trouble; you should get some kind of pleasure of this ordeal", "After you jack off, it'll take a while to recharge and you won't have the urge any more", "Come on, just touching it feels amazing! Think how good it would be if you went a bit further!" and "Never before the history of the world has a girl grown a dick! You're wasting the opportunity!". Her brain was really starting to grasp at straws. And it was working; she had very nearly considered it just so she'd finally be able to think about something else. As a matter of fact, she still wasn't quite sure how she had managed to make it through the day without giving in. But that was just as well. As soon as she overcame her apprehension and told Twilight what was wrong, the cock would be a thing of the past.

She sighed, and entered the library.

"Applejack, I'm so glad you're here!" Twilight seemed far too happy. "I'm just about ready to make a second attempt on the spell."

"Yeah, about that..." Applejack paused. She couldn't quite bring herself to explicitly state what was wrong. "It kinda turned out that your spell actually did kinda do somethin'"

"Really!?" Twilight smiled widely. "That's great! I thought it had failed completely! What did it do?"

"It... uh... it gave me somethin'."

"Oh, it didn't cause you to start growin' facial hair did it?"

"No." Applejack couldn't believe that Twilight wasn't picking up on it. "It's a bit more... substantial than that."

"So chest hair, then?" Twilight cocked her head to the side. "Did you shave your chest or something, then? Your boobs look perfectly fine to me." Without hesitation she reached forward and stuffed her hand into Applejack's cleavage. "Wow, it's still so smooth! What did you use to shave? I should use that stuff on my legs."

"I didn't grow any chest hair!" Applejack yanks Twilight's hand out from between her boobs. If Twilight messed with them too much Applejack would get stuck with a one-way ticket to Boner City.

"Oh. Well, if you aren't growing hair in any weird places what's the problem?"

"Twilight, are you being serious, or are you just messin' with me?"

"Why would I mess with you? I just want to make sure that you don't have any hair growing in weird places."

Applejack groaned. For someone so intelligent, Twilight could be very stupid sometimes.

"Are you serious? How can you not-" Applejack's eye twitched.

"How can I not what?"

"Oh, hell!" Applejack dropped her pants, and pointed at her crotch with both hands. "Your spell caused me to grow a dick!"

"Ohhhhhh!" A light went on in Twilight's head. "That explains so much! Now I know where all the extra magical energy went! There were a couple of different parts to the spell, and all the magic must have gone into that one! It's not quite what the spell was supposed to do, but it's a perfect proof of concept! It can be done!"

"Well, that's... good for you, I suppose, but what am I supposed to do about this thing?"

"Hmmmm... Twilight crouched down, putting herself on eye level with the penis, staring at it intently. Applejack could feel a stirring feeling in her crotch, signalling the beginnings of an erection.

"Uh, Twilight? What are you doin?"

"It's kinda cute, actually." Twilight ignored Applejack. "I really like the foreskin. It gives your dick some character." She slowly raised her hand and gently cupped Applejack's nutsack. "Oooh, this is nice, too. It's so soft, but still a little firm." With her other hand, she began to caress Applejack's cock, gently rubbing the foreskin between her thumb and forefinger.

"T-Twilight, what are you doin'?"

"Ooh, it's starting to get hard!" Twilight gave the shaft a gentle squeeze. "But it's still a bit squishy!" Her finger began to worm its way through the foreskin.

"Twilight!" Applejack began to sweat, her heart beating faster than it ever had before. "Don't do that!"

"It's so warm..." Twilight felt Applejack's cock twitch as she drew her fingers over the glans. "...so warm."

Applejack groaned, and took a step back and out of Twilight's grip. She swiveled her hips as fast as she could manage, thwacking her semi-erect penis across Twilight's face. "Knock it off!"

"Huh?" Twilight blinked, her mind trying to process the shock of the turkey slap.

"What the hell are you doin'!?" Applejack said. "Your spell caused me to grow a cock, I come here to get you to fix it, and the first thing you do is get all touchy? What, were you gonna blow me next or somethin'?"

"I-uh, no! No!" Twilight's normally pale cheeks were flushed. "I was just examining it!"

"Examining, nothing! You were halfway to givin' me a handjob."

"I-I was just checking if your female anatomy was still there!"

"By feelin' up my cock?"

"Okay, okay! I got distracted!" Twilight crossed her arms and sniffed. "It's a very nice cock, after all."

"Thanks, I guess." Applejack scratched her head. "So, even if you do think it is nice, can you get rid of it? It gets in the way a lot, and I kinda prefer being all girl."

"Um, probably..."

"What do you mean, probably!? I thought you said that undoing a spell was real easy!"

"Well, if the spell goes like it's supposed to, it is." Twilight shrugged. "Basically, I tried to cast a multi-part spell on you, and it stopped working halfway through. But it still ended up being a complete spell in itself. Just not the one I wanted to cast. So until I figure out how to work that spell on its own it'll be complicated to undo it."

"You mean I'm stuck with this thing!?"

"Until the magic runs out, yes."

"It was supposed to have run out of magic by now already! Why's it still there?"

"Well, the spell was supposed to change your whole body, so I had to use a lot of magic," Twilight said. "But it only gave you a dick."

"I know that!"

"My point is, all the magic that was supposed to go into maintaining a fully-body change is now dedicated to maintaining your penis."

"So, how long is it gonna be before it goes away?"

"I have no clue." Twilight shrugged. "I'd have to calculate how much magic is required to give you a dick, and then I could use that information to extrapolate the rate of--"

"Damn it, Twilight!" She grabbed her semi-boner and waggled it at Twilight. "You gave me this penis, and you are goin' to get rid of it!"

At that precise moment, Spike walked in.

"Hey, I was making some cookies, and-- Oh."

"Oh, fuck." Applejack moved to cover her dick, but realized it was too late.

"Um..." Spike couldn't help but stare. "I-uh... never realized that you had one of those."

"That's because I didn't until a few days ago."

"But why do you have one now?"

"It's Twilight's fault."

Spike turned to Twilight. "Why on earth would you need a spell for that?"

"It wasn't on purpose, okay! I was just trying to turn her into a man."

Spike decided he didn't want to know the reason for that. "And I'm guessing it didn't work."

"Hell no, it didn't!" Applejack grunted. "I'm only here so Twilight can tell me how to get rid of it."

"Okay, okay! I can think of one way that we might be able to make it go away faster, but you probably won't like it."

"Well, what is it?"

"The thing with body modification spells is that they're magically powered. That is, a good portion of the magical energy used to make the modifications is used to make them... functional. By, uh... making full use of the modification you may be able to use up the magic energy in a shorter time."

"Are you implyin' what I think you're implyin'?"

"Maaaaaaaybe."

"Twilight, would you just go and say what you're gonna say already?"

Twilight groaned. "If you cum, it'll use up the magic energy faster."

"What!?" Applejack's eye twitched. "Are you telling me that I hafta jack off if I want to get rid of this?"

Spike snorted. "Not just jack off, you have to Applejack off!" He chuckled to himself for a few seconds before noting that Applejack and Twilight didn't share his sense of humor. "Fine, I'll shut up."

"I'm sorry, Applejack, but it's the only way to use it up," Twilight said in a tone implying she wasn't sorry at all. "It's either that or you'll have to hang onto it for quite a while. With all the magic I used, it might be a month or more before it goes away on its own."

"A month!?" Applejack stomped her foot angrily. Her dick bounced around. "Fine! I guess I'll just have to whack off, then! I got half a mind to do it all over your bookshelves, as it's your fault I'm in this predicament!"

"No, no, no!" Twilight exclaimed. "That won't be necessary. I mean, it is my fault, after all. So I'm... I'm going to help you out."

"Help me out?"

Twilight cracked her knuckles. "That's what friends are for, isn't it?"

Author's Note

yes I know I cut the chapter off just when things were getting good. you'll just have to wait a bit more.

haven't decided yet, but either the next chapter after this will be the last, or there'll be one more after it. Either way there will be sequels or spinoffs or something, likely involving dicks on other characters. if I didn't it would be a waste of potential.

also i apologize for Spike's pun; I couldn't not use it somewhere