John

John's stomach was churning as he stood at the bus stop. He didn't have to wait long and he was pleased to see the bus wasn't too crowded when he boarded. He made his way up to the top deck and sat near the back. Behind him, on the back seat, a young couple were smooching. A fat bloke sat across the aisle from John noisily devouring a packet of crisps. John was glad of the noise because he could use it to hide his farting. He joyfully let rip, immediately savouring the foul stench he had produced and enjoying the knowledge of the impact it would have on those surrounding him. He wasn't sure if it was that thought, or just the medicine doing its thing, that caused his underpants to feel so tight. He gleefully farted again, and turned in his seat slightly so he could observe what was going on behind him.

The couple were still making out, the young woman stroking the bulge in her partner's crotch.

"Ooh, what's that smell?" he suddenly asked, his nose wrinkling.

"I don't know... but I kind of like it," said the girl.

"Mmm, yeah, so do I," he replied.

The crisp-eating slob, whose name was Barry, finished his snack, screwed up the empty packet and lazily dropped it on the seat next to him. He cleared his throat and sat up a little straighter. The sweatshirt he was wearing was initially loose around his upper torso and tight around his fat belly, but seemed to gradually change shape, becoming tighter around his chest, his belly gradually shrinking. Barry strained sightly and emitted a long, loud, fart. He glanced around, embarrassed at the noise, and John pretended to be looking out of the window.

"What's happening," he heard the girl at the back ask, "to your cock? You were all hard for me and now it's getting smaller again!"

"Er, I dunno" replied her partner, his voice slightly higher in pitch than it was a few minutes ago.

Back to Barry from John and the man's chest had now definitely grown into two large, round breasts, and his buttocks had also become rounder and larger, straining against his trousers. The belly had all but gone, and the face was now becoming much more feminine. The lips were filling out and the skin was becoming much smoother, all trace of stubble and facial hair gone. His actual head hair seemed to have more body and steadily grew in length right before John's eyes. What John couldn't see was that Barry's penis was rapidly shrinking but the man himself could feel it, and put his hands instinctively down his trousers to feel what was going on. By the time his fingers got there, his male genitalia had vanished completely, replaced by a brand new, wet pussy, which he - she - couldn't resist rubbing.

"What the fuck, Jake, you're growing tits!" exclaimed the young woman at the back of the bus.

"Mmm, yeah, feel my tits," replied her partner in a sultry, female voice.

"Wha... ah, ok, ooh yeah they feel good," said the girl, calming down a bit, continuing to snog her partner deeply while straddling his - her? lap. Jake's hands were on her butt cheeks which were ballooning into perfect globes. Her knickers could no longer contain them and they ripped neatly down the middle.

"Ah, Jake babes, mind your hands, I've gotta fart," she said, but Jake's hands just moved over her arse crack instead as she let rip. "Uuuh, fuck yes, I need cock," she said. "I need your cock in me, Jake."

"MMmmm, cock," replied Jake dreamily as his chest expanded and his newly grown tits rubbed against those of his girlfriend. "Big, hard, cock, mmm, yes, I want one inside me."

John's attention was again distracted by Barry, the former man across the aisle, who let out a loud moan. She was furiously fingering her new pussy with one hand while caressing her huge tits with the other.

"Ah, ah, uh, fuck, uh, fuuuuuuck," she exclaimed as she brought herself closer to orgasm. John's cock was now so hard that it was uncomfortable in his trousers and, since everyone else on the bus was in a state of depravation, he felt confident enough to get his hard dick out.

"UUUUUUUHHHH!" groaned Barry in her new, sexy feminine voice as she came, her pussy juices flowing liberally over her fingers. She again farted loudly and looked around, her eyes settling immediately on John's hard cock. John followed his gaze, and was surprised to see how big his cock was.

Looking back at the couple, John saw that Jake's girlfriend had opened Jake's trousers and pulled them down in frantic search for her former boyfriend's cock, only to find a glistening pussy there instead. Undeterred, she buried her face in her former boyfriend's cunt as if trying to find Jake's cock.

"Uh, babes, yeah lick me good," said Jake in an increasingly effeminate voice as Barry shuffled over to sit next to John.

"Hi, babes, I like your cock. Do you like my tits?" she asked, jiggling them for him. "I've got a lovely round arse, too, haven't I? I've got so many holes and I'd love to feel your magnificent cock inside one of them. It must be getting cold, sticking out like that on the bus. Why don't you bury it between my tits or up my arse to keep it warm? You can fuck my pussy if you like, I've made it lovely and wet for you. Or I could give you a cheeky blowjob? I'd love to taste your cum. I've never tasted cum before. Ooh, the very thought is making me so hot," and Barry went back to furiously fingering her newly formed pussy.