being stuck on a train is already bad enough. being stuck on a train with your scarily open shirt and tits pressed up against your friends' crotches is even worse. the train jostles and people move around and bump into each other, and your back presses against the cold metal as your boobs compress from your friends encroaching on your very limited personal space. you look up at them, a few heads shorter, and they're both trying their best to act natural. you're somewhat surrounded by them, and one of them looks down at you, her gaze very quickly but noticeably swapping between staring back at you and staring down your incredibly exposed bust, even more obvious with her crotch pushing it up, and you both look away embarrassed. the three of you struggle with blushing as the minutes painfully go by.
you keep trying to shift your gaze to look anywhere that isn't at either of them, but with every passing minute of the train ride it gets more and more difficult. the stop you three are getting off at is kilometers away, over an hour, and the train just keeps getting more and more cramped. eventually, you literally can't see past your friends, and they lean over you slightly. this doesn't go unnoticed by them, either, as you see one of them slightly bump the other with her elbow, and they both look down at you, before looking side to side, and then back down at you. they both have a perfect view right down your shirt. your top, which even under the best of circumstances struggles to contain your boobs, is practically about to spill open. and then your friend on your left humps. it's difficult to even make out the movement and pressure out of all the normal cramped jostling, but the difference makes itself clear after a few seconds. the rhythm of her hips pressing her crotch against your boob is unlike the chaotic jumble of the train. and soon your other friend follows. the slight pressure on both your tits oscillates, sometimes the pressure syncs and other times they swap opposites. both of your friends gently hump each of your boobs, rubbing their bulging pants against you.
a minute goes by and all the plausible deniability vanishes as they start to get hard against you. your face is bright red as you shoot up to look at the two of them, and they both give a tiny cramped shrug, a face that just says "what are you gonna do?" in a fake defeatist manner. you open your mouth slightly in a quiet shocked gasp, as the girl on the left lets out a little too breathy of a sigh and presses her hips hard into your boobs. the pressure builds up too much for your top to handle, and your breast spins free, hard nipples obvious as it slips back into the folds of her pants pressing against your boob. the train noises masks your now much louder gasp, as your other friend chuckles slightly and barely manages to get a hand down to take the rest of your top off. the next few minutes of your friends pressing their hard bulging pants into your boobs is unbearable. the fear of anyone seeing your exposed tits is terrifying. the embarrassment of your friends humping your tits, forcing you against the wall no less, in a *public space* no less, is. equally terrifying, you tell yourself. that's the feeling you're feeling. nothing else. you definitely cant feel anything wet between your legs. that's your imagination. dont think about that and just focus on anything else, like the bulges that feel like they're gonna burst from the pants that hold them that are grinding against your boobs.
as if on cue, the girl on the right, her hand still near her side, brings itself to her pants button. it's all you can do to mutter "no no no no" as she fiddles with her button, and in excruciating detail, right in front of your face, pressed against your tit, you watch as her zipper comes down, bulge growing slightly bigger after losing one of its constraints, her black panties now pressing against your breast as she moves her pants down just enough to free her bulge. but her hand keeps going, thumbing her waistband, and you glance up at her face just long enough to see her huge smirk, before the movement of her hand shoots your eyes back down. as the train jostles, her cock springs free from her panties, a drop of pre shooting out and landing on your cheek as it slaps down on your tit, the head violently throbbing inches from your face. her humps now drag her cock along your tit, going back just enough to bring her head near your nipples, and dragging along back up, a trail of pre left behind as she grinds on your tit. you hear an "oh fuck" from the other girl as you look over to see her pink and white panties being thumbed down, another cock slapped onto your tit. various conversations, sneezes and coughs, the announcer over the speakers as your friends grind their cocks on your tits.
your sweat joins the pre on your face as the tiny cramped space your in quickly smells of sweat and cock and musk, a tiny biosphere just for you three. their humps are erratic as the grind on you, their moans barely audible over the ambient noise as pre leaks out more and more from their cocks. your top soaks more and more with your sweat, your tits getting wetter and wetter from all three of you, your hot breath panting onto their cocks. a groan escapes the girl on the right's lips as she suddenly brings both her hands down and grabs your tits firmly. she angles her cock with her hips and with the help of her hands on your tits, pressing her dick right between your boobs, leaving barely enough space for the girl on the left as she leaks on herself, stiff. you can hear breathy pants and moans above you as your tits get fucked on the train, an eternity with your back against the wall as her dick glides between your wet breasts. the angle of her cock starts to dig her head further into you, and soon her dick is totally engulfed in your boobs, her hands squeezing desperately on your boobs as you struggle to not mimic her moans. she presses hard against you, balls deep in your tits, the head of her dick throbbing against your sternum as you start to feel ropes of cum escape her cock, the with hot cute moans that threaten to tell the whole train escaping her lips above you. as she drains your balls on this cramped train, throbbing and dripping the last few drops inbetween your tits, she pulls out, already getting limp. her hands leave your boobs, and as she puts her dick away, the girl on your left quickly replaces her hands and starts to mimic her motions. she presses the head of her dick right at the gap, your huge tits pressed together, cum and pre and sweat dripping down the inside of your shirt, and she moans and shivers as her cock sinks into you. the tilt of her shaft lets your tits take her entire cock, but as she bottoms out in you, her head pops out right at the top of your breasts, angled right at your mouth. and as she starts to frantically hump her hips, already obviously close, your fear doubles as you struggle to connect the dots of her orgasm. the girl on the right, her outfit fixed and hands free, also connects the dots. as the girl on the left moans hard enough to have to bit her lip, and her dick is pressed hard against you, balls pressing against your tits, the head of her dick throbbing violently right in front of your lips, your friend on the right grabs the back of your head and forces you to lean down. right as your lips meet her cock and spread slightly, a rope of cum explodes into your mouth, and the hand on your head holds its grip firmly as rope after rope of cum shoots into your mouth. second after second, rope after rope, your mouth is half full after the half minute of cumming this girl does, fully and completely emptied within your mouth. as her cock leaves your lips, the hand on your head angles your face upward, both of your friends looking down at you. you instinctively, slowly, shakily, red as a tomato, open your mouth, showing off just how full it is from the girl on the left. your eyes are blurry and teary as you can barely make out their face, your mouth closing, tongue swirling around the mess that was made in your mouth as you swallow. mouth empty, your friends fix their clothes and leave your tits soaked and exposed. there's still a long train ride left, who knows what will happen