In Pursuit of Happiness

"Laugh? Pinkie, what are you talking about?" Sweetie Belle was deeply confused. She had no idea why her friend was doing this. What her intent was. She remembered that Pinkie left years ago to find a way to make everypony happy all the time. But surely it didn't come to this. This facility, this abduction, and even this meeting. It didn't make sense. Sweetie Belle couldn't fathom why she would be laughing at all about the situation. It was scary to her, creepy even. What was worse was Pinkie Pie herself was eyeing her naked form like a hungry animal. She usually didn't feel too self conscious about being nude in front of other females. But the way she was being stared at made her use her arms to cover her small breasts and marehood.

"What do you mean what am I talking about? It's easy silly. You're going to laugh. What's so hard to understand about that?" Pinkie tilted her head in confusion. It would be innocent and cute how she seemed so confused if it wasn't for the odd sinister intent behind it.

"Pinkie, this isn't funny. Please, just let me out. I don't even know what you're talking about" Sweetie Belle was pouting, she was shaking, she was so scared. She didn't like where this seemed to be heading. She didn't even understand what it all meant. Why would she laugh? This wasn't anywhere close to a hilarious joke.

"Ugh..." Pinkie sighed as she held up her little device. "Isn't it obvious?...hmm, no I guess it isn't." Pinkie began to tap under her chin, pondering to herself as she pressed a button on the device with her other hand. "Lemme see, how to explain it. Well, I guess it's simple really. I'm going to flood that room you're in with laughing gas."

"Laughing Gas?!" Sweetie Belle gasped, and looked at Pinkie with an angry look as she yelled at her "Pinkie! Are you crazy!? I'll just suffocate and die! Laughing Gas doesn't really make you laugh, you know! C'mon...." Sweetie Belle's rage started to subside to sorrow, her eyes starting to tear up from worry and dread "Please, this isn't a game. Pinkie, what happened to you? I'm your friend, remember? Why? Why are you doing this to me?"

But Pinkie mostly ignored her, only interested in "putting her worries to rest" about the laughing gas. "C'mon Sweetie Belle, you know me. I don't like murder or killing or anything like that. That's more if I went insane and started some deranged cupcake....thing. yeaahhhh.." Pinkie just looked to the side, feeling disgusted with herself with even mentioning such a dastardly thing before looking back at Sweetie Belle with a grin. "Anyway, I've been developing this gas for years, Sweetie Belle. It's my own special brew. It's not like what you get at a dentist's office. It really REALLY makes you laugh. I can even control the potency using the dial on this dillary do-dad! But see..." Pinkie raised a finger at her as her cheerful grin turned more cruel "The best part about all this is that the chamber you're in is enchanted in restorative magic. So even if you were afraid of dying from laughter. It won't let you. Nope, you're just going to be giggling....oh by the way. I already turned on the gas"

"What?! Pinki-" Sweetie Belle flew into a rage again, but quickly stopped when she realized if she exerted herself, she might fall prey to the gas. She hadn't even noticed if she had been breathing it or not and opted not to find out if she did. She took a small breath and held it. Trying to refrain from even talking.

Pinkie snickered at her as she watched through the glass "Awww, Sweetie Belle. You were always the cutest. mmmmmm" She licked her lips as she gave her a sultry grin "You really became a sexy mare, didn't you? No...actually. Your sister is sexy. You? Well, you're sexy too, but in a cute way. You were always so adorable with your squeaks and your smile. If I had to give it a name, I'd say you were adorasexy. That's right! Adorasexy; and I bet many a stallion get turned on just looking at you. I know I do." Pinkie opened her lab coat very slightly, to let Sweetie Belle watch as she slid her own finger from in between her breasts down to her marehood, letting her finger give her clit a few pokes "Oh yeah, I can't wait for you to take your first few real whiffs of that gas"

Sweetie Belle gave Pinkie an angry glare as she blushed, making sure to have her arms cover her nipples and sex from her view. She did her best on focusing not to breath. But she could already feel her lungs giving out.

"Oh! Was I right? Is it true? Is that why you're blushing? Hmmm" Pinkie pondered again "Or maybe it's because you're about to lose your breath. Oh, I know. Let's increase the gas's potency just a tad." Pinkie snickered as she turned the dial on her machine just a bit.

Sweetie Belle was reaching her limit. Even with her focus, she was struggling. Eventually holding her breath became more important than modesty as she brought both her hands to her mouth. But that was to no avail. Eventually she had to take a breath. And she did, she took many large breaths to recover from her oxygen deprivation. Even knowing she breathed in some of the gas. She brought her hands to her mouth again. And tried to hold it in. But as she looked back at Pinkie. Dread hit her as Pinkie gave her a crazy malicious stare.

"Happy giggles~" Pinkie said in a low sing song way

At first. Sweetie Belle felt nothing other than energy and adrenaline flowing through her. More than usual, but that was probably due to the restoration magic's constant effect. So she felt secure that she was fine. Perhaps, she always was. Maybe there was no gas. She couldn't smell it, that's for sure. And as worry about the situation began to slightly subside, she suddenly felt her body jerk. And then it jerked again, it was like her body was trying to do something. And then it happened. She could feel her mouth curl into a grin as her mouth puffed up a little more before letting out an adorable little titter "hehehe, What?! I laughed?! ngh..."

"That's right. You took in enough of the gas to be affected at least a little bit. And also, I was right! You still have the most adorable little giggle!" Pinkie said with innocent cheer in her voice.

"Why you! This isn't funny! And I won't laugh again! You'll ngh!" She felt her body jerk forward as a small grin came upon her face. She shook it off, and went back to focusing on not breathing. But she had already exerted enough air from her outburst and little titter that it wasn't long before she had to take another large breath.

"Uh oh...things are going to get hi-lar-ious~!" Pinkie said in a sing song tone, keeping her focus on Sweetie Belle's face for that smile. Ever so slightly shifting her vision to Sweetie Belle's tits, if only for their bumpy goodness.

Sweetie Belle was already starting to feel more obvious effects. Now her body was shaking on it's own. The gas was causing her to find things strangely humorous, despite things not actually being funny. She was doing her best to resist the urge to giggle. She tried to focus on her rage. Maybe if she stayed mad, she wouldn't smile. She stepped over to the glass wall and began to bang on it. "PINKIE! LET ME OUT OR I SWEAR I'LL USE MY STARDOM TO BRING ALL OF EQUESTRIA DOWN ON YOU!"

Pinkie said nothing at first. She merely leaned in, pointed directly at her, and smirked before saying "You're cute when you're angry. But you're cuter when you smile. WOOOP!" Pinkie then made a funny face at her, sticking her tongue out as she did.

Sweetie Belle stepped back in surprise as her angry expression began to twist into a happy one. She suddenly felt a stronger urge to laugh. She brought her hands to her mouth but it was to no avail. She was giggling through her fingers, longer than her earlier titter. Worst still, due to such giggling. She had to take another breath.

"See? Isn't everything better when you can laugh about it?" Pinkie tilted her head with another of her innocent smiles. Not hiding the fact that she was now beginning to show actual arousal from Sweetie's reaction as small strands of her juices began to appear on her masturbating finger.

"No..nhehehe. It's nothaha...Nothaa....NOT FUNNY!" Sweetie Belle broke through her laugh to another angry shout. But it didn't last long before she had another adorable giggle fit. There was now no thought about modesty as she tried to keep her mouth closed with her hands. She was stepping forth and back, turning herself side to side. All it did for Pinkie was give her a view of her equally adorasexy ass, small yet plump, as Sweetie giggled her little song to her. In a panic, Sweetie Belle rushed to the glass and started banging on it as her giggling slowly began to become more constant. She was screaming out "Let me out! Let me out! Please! I'll do whatever you want!" in between her giggle fits.

"Nope! This is my favorite song after all. Well...next to a certain other one. You know the one" Pinkie said with a gentle sigh as she feels a small surge of pleasure from her masturbation session.

Sweetie Belle continued to pound away at the glass. Even trying stabbing her horn into it to break it. She even tried casting a spell. But with her body betraying her, constant bouts of nonstop giggling ravaging her body, she couldn't even focus enough to get it to light up. Eventually, her banging became weaker as her giggles became full on laughter. She had to stop to clutch her sides as they felt like they were beginning to split. Even with the restorative magic, it couldn't stop the usual effects of constant guffaws. This wasn't like any kind of laughing gas she ever breathed in before. Regular gas was supposed to numb such feelings. This gas, all it was doing was making her laugh without control or restraint. Her mane and tail becoming frazzled from her constant shaking as her body began to break into a sweat as her giggly girlish squeals filled Pinkie's ears.

Pinkie walked back to her desk to grab the chair, and rolled it back towards the glass wall so she could have a front row seat to Sweetie's giggly torment. She then resumed her masturbation session as she laid back and sighed happily. she continued to observe the sexy fillyish mare laugh as her coat glistened from her sweat. "Ahh Sweetie Belle, you sound like a little filly giggling like that. If it wasn't for the fact we have to test something else. I'd be in there with you. How could any stallion resist you? I bet they get an instant boner when they see you smile like that. Yeah, Rarity could never EVER compete"

Sweetie Belle no longer could focus on Pinkie's words as she fell to her knees. She could barely form words, or more exact, barely scream the word "HELP!" through her gale of uncontrollable hysterics. Tears of mirth streamed down her cheeks as she fell to her side, kicking and screaming in laughter. It just wouldn't stop, it was like something was tickling her brain itself. She wanted to fall unconscious, but the restorative magic wouldn't even grant her that. She had lost control of her body, she couldn't stop no matter how hard she tried. Her strained snickers and stress from her body doubling over in laughter was causing her mind to melt like butter. The pain she was feeling from the constant stream of giggles was overwhelming. She felt like her sides were going to blast into orbit. She tried dragging herself back to the glass wall, but with everything seeming so hilarious now. She resigned to her fate and rolled onto her back, laughing squeaky, beautiful, sexy laughter. Her breasts shaking with every titter, her chest compressing and filling with air whenever she could take a breath before losing it to another bout of uproarious laughter. She could feel herself losing her mind as more whiffs of the gas just made things worse. Eventually, even the restorative magic had trouble keeping up as she began to curl into a ball. she entered silent laughter. Chuckling to herself as she coughed every so often.

Pinkie stopped herself from reaching climax. Watching Sweetie Belle nearly lose her mind to the gas was exhilarating to her. The smiles, the laughter, her resistances draining to nothing. Even as Sweetie Belle laid there, resigned to her fate. It only served to heat up her libido. But she knew she had to hold off. This was, after all, an experiment. "Welp, seems like the gas is a success, in more ways than one." Pinkie said as she turned the dial on her machine the other direction, and pressed a button, shutting off the gas. "Now I kinda wish that magic wasn't in that chamber. If only because it'll clear the gas from your system pretty quickly. But that's ok. Because the second part of the test is about to begin. I want you to meet your new friend Sweetie Belle, you should say hello!"

Sweetie Belle could finally feel the urge to laugh leave her. Her silent laughter soon turned to giggles, and those to titters. She slowly began to sit up, exhausted. Only feeling small urges to laugh every moment or so. She sat there, she still hadn't heard anything Pinkie said. She just sat there, silent, letting the last bouts of laughter leave her, though the trauma in her mind remained. She survived. She felt she had done it. She even felt, and this feeling only came about due to the fact she seemed to be back to normal, that maybe Pinkie would come back to her senses. Even with her own mind back. She was still terrified, and felt that there was no means to escape, so maybe if she pleaded. Maybe even if....she gave herself to Pinkie....she'd be let go. But then Sweetie Belle took the time to look around the chamber. And noticed multiple tentacles had come out through the many holes along the floor and ceiling. Her eyes opened wide in terror from the mass of swaying tendrils. "WHAT IS THAT THING?!"

Pinkie Pie smirked to herself. She knew what was coming next. And she knew the laughing gas had taken all the fight out of Sweetie Belle. Even with the restorative magic, she wouldn't be able to fight off her "Giggle Pet", as she so aptly named it. Yes, Pinkie knew if she had ran this test before the test with the gas, Sweetie Belle may have killed the "poor" thing with her magic. Pinkie realized she goofed by not putting a magical restraint ring on Sweetie Belle's horn. But hey, she really wanted to see Sweetie Belle do her best to struggle through any means she had. And now? In her weakened state? she was the perfect test subject for this mysterious tentacle'd creature. "As I said, that's your new friend, Sweetie Belle. And he's really interested to meet you!"

Sweetie Belle couldn't even guess as to what she meant. She couldn't even find the energy to stand up to at least try to find a place to stay away from them. She had laughed herself to the near center of the chamber. In the center of these tentacles. She could only hope they weren't going to tear her apart. But of course, that sort of thing was far from Pinkie's mind.