Sam

After a while, you finally pick someone.

"Sam!" You call to the wee nerd, "Why don't you come up, since you knew the most already about the prostate."

The geek didn't seem comfortable, but was compliant. When he got to the front, you told him to strip. After initial complaints, he followed suit, and too stood buck naked in front of his classmates. Sam was your regular nerd. He had wide rimmed glasses, acne, small body and no strength. Despite this, he had a cute butt, which you planned to get your hands on. When he showed his cock, you were surprised. There was a forest of hair above his average length rod, while his balls matched the same dark covering. Obviously this kid never learnt to groom himself.

"Alright Sam," you looked at the teen, who was beet-red, "once you're hard, put on a condom and insert your dick in Nick's arse."

Sam began reluctantly tugging on his dick, getting it to full mast, when Nick turned back.

"I'm not having this fag fuck me!" He yelled, "I ain't having anyone fuck me! This is ****!"

"Nick, just be quiet." You told him.

Nick reduced to grumbles, while you saw Sam putting on a condom. You quickly lubed up Nick's hole, before encouraging the nerd forward. Pushing against the jocks virgin hole, Sam finally plopped in. Nick sharply took intake of air, while you grinned at your work. Sam took Nick's hips and began to lightly fuck his tormentor. It didn't take too long before Sam's pace increased, and Nick's cock began to rise. After a couple of quick thrusts, Nick let out a pleasurable moan, and came on the spot.

"That there," you point to the aroused class, "was Sam hitting Nick's prostate!"

Nick began to moan against his will, as Sam began slamming into the rugby star, his furry balls slapping the jock's arse. It didn't take long at all until Sam began crying out as he orgasmed, filling his condom. Pulling out, he took off his protection and disposed of it into the bin.

"Alright," you say, loosening your belt, "your final task today is to prepare yourselves, and ride my cock until I hit your prostate."

One by one, each boy came up, taking their first cock in their arse, each only lasting a matter of minutes, some seconds, before they came massive loads as you struck their g-spots. A second instruction before starting was to shoot their loads all over Nick. By the end of the lesson, each boy was rubbing their freshly popped cherries, all opened by you (apart from Nick, which you now regretted). As the bell rung, each boy redressed and left. You'd told Nick to not clean himself, and wear the cum proudly. You watched in awe as all the freshly fucked teens left, especially school hero Nick, who was coated head to toe in cum, and grinned as he left. You smiled, and reclined back in your chair.