Get a blowjob

You hook your feet around the back of her chair and scootch her forward until your legs are straddling her waist, then lean down and kiss her. One hand delves back down her top as your other reaches behind her head. Her hair isn't long enough to twist your fingers through, so you settle for a firm grip on the back of her skull as you mash your mouths together. She's not responding to you, obviously, and you take your time exploring the inside of her mouth with your tongue. It roams along the back of her teeth, slides over her own tongue. You nip one of her plump lips gently.

You pull the fit teen's chair even closer until your cock is pressed up against her waist. Pulling her blouse up a little, you let your cock slip under her top to make contact with her smooth, warm skin. Your deep kiss continues, her cheek bulging obscenely as you thrust your tongue against her gums and your cock against her waist. Finally, you draw away. A thin strand of saliva connects the two of you together for a second before falling to stain her blouse a deeper shade of blue. The entire time, the lecturer has continued to drone on about upcoming job opportunities or research grants or whatever. Most of the students look as bored as your little toy by this point. Nobody cares that you're practically dry humping one of their peers.

By pushing her arms out of the way behind her and pushing her legs together, you find enough room to kneel on the chair she’s sat in, straddling her thighs and holding yourself up by holding on to the back of her headrest. In this position, your cock is lined up directly in front of her face, twitching impatiently in front of her eyes. She doesn’t even register the new position she’s been **** into, and continues to stare through your body with a relaxed expression.

“You don't mind if I use you to get off, do you?” you remark with a smirk. “You've gone and made me horny and I REALLY want to just grab your head and fuck that pretty little mouth of yours. That's not a problem, is it?” There's no reply, of course. You didn't expect one.

You tip your dick down with your hand and wipe the head across her lips, leaving a smear of precum glistening across her nose and upper lip. You push it slowly between her lips, causing your cockhead to bump against her teeth. Letting go, her upper lip smacks as your cock springs back up to slap her on the nose. You laugh. The feeling of power is intoxicating—you can do anything you want to this girl and nobody will care. Hell, nobody will even notice!

You take your time wiping your cock and balls all over her face, smearing a thin sheet of precum over her skin. Then, you tilt her head back and admire your handiwork. Just a few minutes ago, this stunning young girl was just another bored student. Now, she’s pinned down under you, her face wet and ready, a face that's both begging to be fucked and blissfully ignorant all in one—cradled in the grip of your hands.

Enough foreplay, you’re already painfully hard at this point.

You stick a few fingers into her mouth and open her jaw. There's no resistance, but she closes her mouth again as soon as you withdraw your hand. She does so languidly though, and with no real ****. You open her mouth again and this time, you push your cock into her. Letting go carefully, you're pleased as her lips close around your cock but make no further attempt to bite your dick off, simply resting at a neutral state. Since you don't exist, she obviously isn't aware of any intrusion. You grab the back of her head gently, and begin rocking her forward and back, using her face as a sex aid while she stares dully ahead.

Suddenly, her eyes flick to one side and she leans in towards you, her arm reaching for something on the far side of her desk. Of course, with you in the way, she has to reach a little farther than usual, resulting in her forcing her face down the last few inches on your cock. Two things happen as she does so. Firstly, she gags horrendously. The lecture hall is abruptly filled with the harsh, guttural sound of her retching as she violates herself. Secondly, you feel the head of your cock press firmly against the back of her mouth. There's a pause as pixie girl stretches forward against the obstruction. The pause continues for second after agonizing second, the **** building as she applies more and more pressure to reach behind you. You grind yourself against the flesh of her upper throat and tears begin to form in her beautiful, oblivious eyes as she unknowingly tries to deep throat you. She gags and wretches until finally something gives, and the unrelenting pressure forces your cock into her throat. Once you're in, she slides easily down your cock until her teeth are digging into the skin of your crotch. You groan at the sudden sensation of your erection being tilted downwards and her tight throat walls rubbing against the skin of your shaft.

Unable to stop yourself, you thrust forward, pushing her head back. You lean back until your cockhead is almost out of her throat and, as you expected, she once again slides forward and takes you all the way down. She wretches again. You repeat the action, and she dutifully throats you again. You begin thrusting with increased tempo, helping her on the downward thrusts by gripping the back of her skull with both hands and pulling her head into your crotch. Tears are streaming freely down her face now, leaving thick black smears as her mascara streaks. You're getting so close to coming now, but you're also not sure if she's had a chance to breathe during the ordeal. Her skin is certainly starting to look flushed. Other than the tears, possible lack of breathing and constant sounds of gagging, however, she looks completely nonchalant, as does everyone else in the area. Groaning, your cock pulses inside her. The looks of complete indifference are really making the experience all the better, as if having her mouth so deeply and thoroughly violated was just another part of a her daily routine.

You pull her tight against you and let yourself climax. You don't hold anything back, dumping everything you have to offer straight down her gullet. Her throat convulses around your flesh and the sounds of her gagging fill the theatre. Nobody reacts, of course. The girls sitting to either side of you carry on taking notes, the lecturer continues droning at the head of the room, and you continue squirt your seed into the young girl's stomach. Her chest heaves violently and she coughs up a thick frothy wad of cum and spit over the desk. Then she forces her thick lips against your skin just a little harder. Her hand must have finally grabbed whatever she was reaching for, because she then slouches back onto her chair. You let her go, your cock head now ultra-sensitive after orgasm. You feel every ripple of her throat as you slide out of her and pop back into the cool air. A deep gasp is followed by an uncontrollable coughing fit as she continues to coat her face, blouse and desk in spittle, cum and tears. She doesn't seem to realize what a state she's in—she just continues slouching obliviously as the fluid soaks her top and hangs in thick pearly strings from her chin.

Having finally retrieved her pen from her desk, she leans on her left hand and starts idly doodling pictures of hearts on the corner of her (now somewhat soggy) notepad. She simply draws to kill time, her face and clothes absolutely devastated by the torrential amount of cum you gave her, but she seemingly doesn't mind any of it or doesn't notice it. The sight of a girl casually going on with what she's doing after being used in such a manner with evidence of the act clearly visible is enough to get your cock twitching again.

Now, to go further with her, find another girl, or explore elsewhere...?