A Black girl with a great ass

You throw a weary look along the group of eager teenagers when your eyes land on the black girl who cheered for Paige.

Her back is turned and she appears to be gossiping with some friends, but your eyes are drawn to her big round rear; either she has done a ton of squats, is wearing some sort of push up panties or she is just that genetically gifted - because her ass is amazing.

You're a healthy male with a decade of sexual experience, days upon days of combined porn-viewing and you still haven't seen anything like it before. It's almost like it has its own gravitional field, because you're finding it impossible to look away. It is the kind of butt about which songs are written (by Sir Mix-A-Lot) It doesn't help either that her skirt appears to be at least a size too small.

Despite that you've already come twice in a short space of time, your cock is already standing to attention.

"Looks like he's chosen, girls!" Minxy says and you realize you must have been staring for a good ten seconds. She's smirking widely, but you can only tell because she has moved into your pretty static field of view.

"I think he's in love with you, Rose." Minxy jeers, "Or at least this.." She smacks her classmates' ass and the resulting jiggle is enough to draw a throaty moan out of your throat. The nearest girls hear you and giggle.

Rose herself, who was very involved when Paige was jerking you, now seems completely disinterested - or at least feigning it. She looks you up and down, her eyes lingering on your errection, and you in turn are allowed a proper look at her. Compared to her perfect posterior, the rest of this Rose is mediocre at best. A too round face houses a wide nose and two dark brown eyes. Her curls are luscious in a way that screams multiple hair products, and while her breasts are substantial, it's obviously due to her BMI being later in the twenties. She is, in a nicer word, a stocky girl.

All this is forgotten though when she once more turns her back on you and wiggle her mesmerizing booty at you.

"You want this?" She asks over her shoulder and you don't think you'd be able to not nod.

"Please.." You implore, which seems to satisfy Rose, who saunters up to you with her hips swaying. She turns around and very slowly hitches up her skirt of her uniform, teasing inch after inch of smooth ebony skin, and finally the red triangle of a lacey thong (no pushup here). This too is removed very deliberately and put in pocket of her jacket.

Your cock twitches, aching with expectation, as if trying to bridge the distance between the two of you, and Rose grabs it, giving it one ceremonial stroke before she gently sandwiches it between her cheeks. After experimentally grinding against you, she frowns. This won't work dry.

"Spit." She commands; an order you don't find hard to obey since you're practically drooling at this point. You lean your head forward, takes aim and the school girls all cheer as a big dollop of impromptu lube lands your cock. Without much warning, Rose presses her rear tightly against your crotch and start to grind up and down.

You gasp, groan then starts fullblown moaning as your dick is swallowed in that delicious bubble butt, the head now and then peaking out of her ass cleavage.

"Is he addicted already?" Somebody asks tauntingly and you can't help but wonder that yourself.

The steady rhythm set by the ebony student is maddening and clearly intended to comfortable to her, rather that bring your to the orgasm your lustaddled mind is begging for. You attempt to push back against her, and while Rose doesn't exactly encourage it, she doesn't stop you either. Now and then she makes you replenish the lube and since it means the assjob will continue, you easily comply.

"I'll leave the rest to you.." Rose suddenly informs you. She has stopped moving and though your cock is still hotdogged in her bouncy black buns, it is now up to you to thrust. The angle is awkward and tiring but it still feels heavenly grinding your hard member against her, and now you're finally allowed to set your own tempo - faster than she was, that's for sure..

As for Rose, she seems to be ignoring you, again chatting casually with her friends, as though she hasn't worked up some poor sod into a sexual frenzy and left him to gratify himself against her. That damn tease. Apparently her sister Keisha said something outrageous; you find it hard to really pay attention.

"Yeah, work it, boy." Somebody else encourage you and you grit your teeth, desperately fucking her round, soft butt. Moaning and gasping, you're quickly approaching that sweet edge when your tired legs buckle under you. You collapse as far as the handcuffs permit and Rose turns to look at you, with an expression like she's finally noticed you. Her face is impassive, but you're pretty sure you see the amusement sparkle behind her eyes.

"Well.. That's just too bad, isn't it?" And with those words she starts putting her panties back on. You lie on the ground, too surprised to object. Fortunately though, it seems like your earnest desperation has earned some sympathy with the school girls because some start booing, others urge her to have mercy and both in the end give way for a unanimous (if uninspired) chant of "ANAL! ANAL! ANAL! ANAL!"