Ass of course.

Alex quietly moved to the teachers desk while the instructor closed and locked the classroom door. As the teacher moved back to his desk area, Alex slowly pulled his pants down, quickly followed by his underwear and bent over the desk keeping his shirt and shoes on.

This wasn’t to be intimate. This was a transaction. Alex wouldn’t give Mr. Rockwell the delight of seeing Alex emotionally involved.

For his part, Mr. Rockwell didn’t seem to care. He pulled his own cock out, already hard and at a girthy 7” and began stroking it, getting it ready for some young boi ass.

“Good choice Alex,” Mr. Rockwell drawled, “I somehow knew this was what you would choose.”

Mr. Rockwell’s right hand reaches into his side pocket and pulled forth a small tube of lube. Looks like he came prepared for Alex’s ass.

“Pull your cheeks apart Alex.”

Alex obediently pulled his ass cheeks apart and exposed his asshole, now in the shape of an asterisk.

Gently, Mr. Rockwell applied lube to Alex’s hole, making sure to spread some inside his tight back door. After applying some lube to his own cock, Mr. Rockwell lined his cock up with the boi’s hole and began aggressively teasing the pucker with his glans.

“You ready to earn that ‘A’ boy?”

Mr. Rockwell sneered.

“Yes sir,” Alex replied.

With that, Mr. Rockwell began piercing Alex’s butthole with his rock hard meat.

“Sooooooooo goooood.” Mr. Rockwell slowly sank his 7” dick into the boy’s ass.

Once he was hilted inside the boy, Mr. Rockwell began sawing in and out of the boy immediately. There was no reason to take it slow or delicately, and so he took it hard - and fast.

Alex was glad for the lube in his butt and covering his teacher’s cock. If it wasn’t there, this would be extremely painful. As it was, there was a slight discomfort, but he felt his butt heating up and the lube doing its job.

Alex groaned as his teacher hit his prostate, and every time thereafter as his teacher repeatedly massaged Alex’s prostate with his cock.

Alex raised himself onto his hands, no longer laying his chest on the desk. He was getting into this despite himself. He found himself beginning to push his hips back trying to get more cock inside him at a faster pace.

Mr. Rockwell grinned. He could see the boy warming up to being used like this. Whored like this. He kept thrusting, angling his cock to get the groaning reactions from Alex. This was the first time he’d fucked a boy’s ass, but this wasn’t the first time he had fucked his students (or their asses). He loved fucking his wayward and slutty students up their asses, but until now, he hadn’t found a student who loved it as much as he did.

Alex was cumming. He felt his load shooting onto the floor, and he felt his hole tighten around the shaft currently spearing it.

Suddenly, the boy’s ass tightened around his dick and Mr. Rockwell felt his balls tighten and seed rush forward. He attempted to hold it, wanting to prolong the pleasure, but a few seconds are all he achieved. As he rooted himself in the boy, his seed flooded the boy’s bowels. Mr. Rockwell was surprised as he came copious amounts of cum up the boy’s butt, he had never cum so hard in his life.

As Mr. Rockwell pulled his cum covered dick out of the boy’s hole, some of his seed followed and dropped directly onto the floor, mixing with what had to be the boy’s own load.

“Looks like you made a mess Alex,” the teacher grumbled, “ we need to hide the evidence.”

With that he pulled a dazed Alex back by his collar and pushed him to the floor. “I can only think of one place that can hold all of the Evidence safely. Lick it up.”

Alex, still riding his orgasm, didn’t even stop to think about it. He obediently dropped to his hands and knees and began licking up and swallowing the mixture of their loads from the somewhat dirty floor. In the back of his mind, Alex felt humiliation at seeing himself do this but at the from of his mind, he was sad when it was all gone.