Some people should have a license to fuck

I've already won the main prize. But sixteen hours of biology makes up for the eight hours of skip day plus the four hours of studying last night with a bonus four hours. Garrett isn't bad looking, but I have a feeling he is going to enjoy the lab a lot more than I am.

I sigh and nod. "Ok, it's a deal. No biology for the rest of the school year and I graduate?"

"That's correct. You have my word."

"Fine. How does this work?"

Perkins raises an eyebrow. "You know what I mean Mr. Perkins. This whole lab thing. Do I just undress and he puts it in or is he going to have to name body parts as we go along?"

"I think you just do what comes naturally. If he can figure it out from there we are good to go. As long as you aren't hampering the process, I'll honor my end of the deal whether his end honors the deal or not."

Cute word play there mister science teacher. Perkins says "Okay, Garrett, we are going to do a science lab on the reproductive system. This will replace your final grade, and hopefully you will pass this year."

Garrett, still clueless, asks "Okay Mr. Perkins. Why is Riley here?"

"She's going to help you complete the lab. To put it simply, you get to have sex with her. If you can handle that, you get an A for the lab, and you finallyi graduate and we never have to see each other in a classroom setting again."

"I get to bone Riley?" The excitement in Garrett's voice is a lot more enthusiastic than seems appropriate. In a flash he has dropped his shorts and boxers to the floor and is standing there naked from the waist down. Mr. Perkins, I think he knows what to do.

I walk over to Garrett, get down on my knees and start stroking his cock. It really isn't that exciting. Much like Nathan, Garrett doesn't trim worth crap down there. I take the head of his cock in between my lips and start the old ice cream cone trick. His erection swells to its full extent in less than a minute.

Above my head I hear Garrett ask, "Can't I just put in her pussy now?" Perkins thankfully explains to him the lubrication aspect, especially if I'm not getting any foreplay to start, is a necessary part of the process. My main focus at this point is getting his cock as wet and slick as possible because I don't think Garrett is going to be concerned about my comfort in the process.

"Now, Mr. Perkins?" he asks. Dear god, please let this go fast. I keep repeating "no more biology" in my head over and over again.

Perkins asks me, "Riley?" I've done the best I can. I remove Garrett's cock from my mouth and nod my head toward Perkins.

"Yes Mr. Livingston, now."

I stand up, and no sooner have I loosened my belt and undone my jeans, Garrett comes up behind me and yanks everything, thong included, down to my ankles.

Someone's in a hurry.

"Can she bend over?" I bend over the desk and spread my legs. I feel the head of Garrett's cock press against my labia, then it slides right on by, missing the point of entry. I look back and watch as he tries again. Apparently he thinks the process is hands free, but at the angle I am bent at, he's never going to get in in that way. I ask Perkins, "Do I need to help him put it in so the lab counts?"

Garrett misses again and says "I don't need Riley's help, I've done this before."

Perkins winks and says, "No, if he's close it counts. It's the knowledge, not the accuracy."

Garrett backs up and tries again. This time he at least puts his hands on my hips to steady himself. I feel him sliding past the target again and clench my thighs together and make what I hope is not an overly dramatic moaning sound. Hopefully the feeling of pressure around his cock will move things along. I give a thumbs up to Perkins.

Garrett, convinced his cock is in the right place, goes at it like he's auditioning for a porn video. Perkins walks around to the side and out of the corner of my eye I catch him stifling his laughter as it is probably obvious from his angle that things are not where they should be.

No matter, I moan periodically as he hammers away at the empty space between my thighs, clenching tighter occasionally pretending to have orgasms. The problem I begin having is one, he must spend a lot of time practicing by himself because his endurance is top notch, and two, the pressure I am exerting to create the imaginary pussy is forcing that jackhammer cock to rub back and forth against my clit. While the motion is repetitive, he seems to be getting faster, and while it isn't the most ecstasy-laden orgasm I've experienced, I can feel it coming. Assuming he doesn't come first.

Perkins has come back around to the desk to observe. You notice he is getting something out of this despite how amusing the whole "fuck the air" thing Garrett is focused on now. The something he is getting is presenting a sizeable cock straining against his pants to get out. The question is, do I **** Perkins or give him some relief?