The story so far:
It is 2050. Alison Bates, butt-plug magnate's daughter, has come to London to study at the Royal Academy of Fucking. On the train on the way down she met Rob -- whose sister Eva is also studying at the RAF, but has so far proved somewhat unfriendly. One evening, while Alison is relaxing with her friends Bradley and Claire, Rob unexpectedly reappears.
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"Hey, Alison, suck my cock! How're you doing?" said Rob, his eyes lighting up at the sight of her spit-covered face peeping out from under Claire's ass.
"Shit, Rob, I wasn't expecting you. But... come in..." said Alison uncertainly, not really knowing what else to do. "Claire, Brad: this is Rob -- Rob: Claire and Brad."
"Suck my cock, Claire," said Rob politely. "Fuck a bitch, Brad."
"M' pussy," muttered Claire. "Bitch," grunted Brad. Both were surprised to see a total stranger -- and a black man to boot, walk through the door. And both were thoroughly nonplussed to have been interrupted mid-fuck.
Alison peered out from underneath Claire's ass. "Uh, Rob, Brad and Claire were just about to come. Do you think they could finish off?"
"Oh, sure, of course, so sorry to interrupt -- I just happen to be here for the weekend, and --"
"Later, Rob, later" interrupted Alison. "In the meantime, how about putting your cock to good use? Claire, you remember I told you about that black guy who fucked my ass on the train? Well, here he is! I bet you've never sucked black dick before -- and this one is fucking huge! You want him to fuck your throat?"
"Hey, why not? A spit-roast -- fucking! Rob, come here and ram it deep! Brad, keep fucking my ass: I wanna come with two cocks inside me."
Rob seemed slightly reluctant. "Actually, I just dropped by to see Alison -- I can come back later if you prefer?"
"Alison's not fucking going anywhere," replied Claire frustratedly, "and nor are you -- so get your cock out and fuck my throat, boy!"
Courteously, Rob moved to Claire's front end, unzipped his fly and took out his flaccid but huge black dick which he gently proffered to her. "Fuuuuck!" exclaimed Claire, in awe at the massive member now dangling in her face, sticking out her tongue to taste the bell-end.
Rob leaned forward to shake Bradley's hand: "Very nice to meet you, Brad: any friend of Alison's is a friend of mine."
Bradley shook Rob's hand, and replied with a somewhat more perfunctory "Yeah, fuck, hi." Alison wasn't sure whether he felt a bit jealous of Rob's cock size, or whether he knew whose brother Rob was, or whether he was just concentrating on the exquisite sensation of his hard cock still deep in Claire's tight asshole -- which, with perfect concentration and control, he slowly resumed fucking.
Rob was still smiling at Alison, his eyes twinkling with delight at the sight of her face peeping out from under her friend's body -- and he seemed to have forgotten that he was supposed to be fucking Claire's face. But Claire was having none of it. "Fucking fuck my throat, boy!" she shouted, as she grabbed Rob's buttocks and dragged him towards her, so that his entire cock disappeared into her gullet in one go. Claire's throat emitted a loud gagging noise -- but she didn't release him until her tongue was enfolding his balls from below and her eyes were bulging and watering with pleasure.
Rob was still grinning at Alison. "What the fuck is his problem?" Alison wondered to herself. "Why doesn't he concentrate on the throat he's supposed to be fucking?" Alison defiantly stuck her middle finger up at him to try to convince him to do just that -- but Rob just grinned even more broadly. "Fucking hell," she sighed in despair, as she slid her head back under Claire's body, out of Rob's sight, so she could resume eating Claire's cunt. It took some more coaxing from Claire to convince Rob to fuck her throat as roughly as she wanted -- but at last his black dick was as hard as it was huge, pounding balls-deep in and out of the blonde girl's throat, who quacked and gagged noisily as geysers of spit erupted from her gullet, splattering all over Rob's cock, dangling obscenely from his shaft, and splashing down onto Alison's cunt below.
What with Alison's skilled oral ministrations upon Claire's pussy and Brad's perfectly calibrated ass-pounding, it was not long before Claire was moaning with her impending orgasm. As it washed over her, she screamed one loud long "FUUUUUUUUUaargh!!!" from deep in her gullet before being gagged by another deep thrust from Rob's cock.
Bradley was again nearing his climax. "Where do you want my cum, Claire? Ass or cunt?"
"What about both of you jerk off over Claire's face?" suggested Alison.
"Wait a moment, Al," remonstrated Claire, "I've already had a load in my face tonight, and I've come twice. I think you deserve something special. Come on, boys, both of you jack off over Alison now, while I eat her out. She'll look so pretty with all your cum over her face!"
And so Alison knelt on the bed, both men jerking their dicks off into her face. Bradley was clearly very close to the edge, but, ever the professional, was holding back so as to give Rob a bit more time. Rob was gazing into Alison's pretty face with a mixture of lust and adoration, his eyes still twinkling with delight. Claire knelt on the floor so she could reach Alison's pussy, locked her lips around her clit, and began to finger-fuck her cunt hard. "Oh fuck, Claire," whimpered Alison, "that's so fucking good, you're gonna make come. Oh yeah guys, can you jizz all over my pretty face as I come? Can you do that for me, boys? Go on, jerk those fucking dicks off on my fucking slut-face. Oh yeah, Claire, rub my fucking clit, make me come now, I'm gonna fucking come, I'm fucking coming, oh yeah, OH FUUUUUUUUUCK!!!" Alison screamed, as her orgasm overtook her. At exactly that moment, both dicks exploded. Rob's cum squirted out in fat streaks which flew through the air in great arcs, landing in Alison's hair, on her forehead, on her cheeks, in her eyes, and on her puffy round tits. By contrast, Bradley's cumshot was perfectly timed and perfectly aimed, sharp and efficient: the first three shots squirted straight into Alison's open mouth, the next two over her nose, the remaining on her cheeks, so that his cream plastered her face and poured down her chin, forming long gloopy strings which dangled like an old man's beard.