Bends over his desk

With slightly ragged movements, Dale moves to his desk. He pushes things off to make room, messing up the orderly setting. With the desk clear, the mindfucked scientist lies his torso on the wood, presenting his ass. He puts his hands back, spreading apart his cheeks. There, between sparse hair, was his cherry, ripe for the picking. You approach, putting your finger at his entrance. Dale groans hornily, wiggling his ass as you push inside.

"Oh yeah," you chuckle, feeling the tightness, "this'll do just fine."

Removing your finger, you take your saliva slick cock and position it at his hole. The young genius hums contentedly as he feels your python at his backdoor. However, as you begin pushing, his hums become grunts. You are going slowly, finding it difficult to fit inside of the untouched chute. Eventually, through much perseverance, the head of your dong breaks past the sphincter. The man beneath you howls in pain and pleasure, cut off as you quickly cover his mouth. As hot as it would be to have an army of geniuses who are brain dead from horniness, you couldn't risk drawing this much attention when you weren't completely sure of your power. As you edged in, you could hear the muffled groans from Dale. With your free hand, you stroked his straining dick, eliciting a moan into your hand. After a life time of pushing in, you felt your pubes meet his globes.

"Alright Dale, get reading for a mind shattering fuck."

At that, you began pulling out, before slamming back in. Your cocksleeve was moaning at the feeling, probably never feeling so full in his life. You continued pounding into him, hearing your balls slapping everytime you pushed back into him. Dale was a moaning mess, blissed out in a dick filled daze.

"Tell me slut," you say, uncovering his mouth, "what were you working on when I walked in?"

"Uh-ungh-ungh-uh I don't remember-ungh." he moaned, struggling to formulate the sentence.

"What's two plus two?" you ask, driving your cock in slow, hard thrusts.

"Uhh-ungh-uhh-fuck-umm." he grunted, struggling to solve the simple equation.

"Tell me Dale," you lean in, whispering in his ear, "what are you currently thinking of?"

"Cock!" he gasps, as if it was finally something he understood, "Your cock! How it's filling me! How fucking big it is! Oh fuck!"

Dale tensed as his balls unloaded, shooting ropes of cum onto his desk. His ass tightened around your rod, squeezing your own spunk out. The two of you moaned loudly as you filled up the star employee, while he unfilled his sack. When you finally stopped spasiming from orgasmic euphoria, you collapsed onto the smaller man, who in turn was recovering from the spontaneous fuck.

"Hey Dale?"

He could only moan in response.

"I want you to feel this way whenever I walk into your office. Everytime I come in here to clean, or even if I just walk in for a plain booty call, I want you to feel your brains seep away until all you can think about is my cock filling you up."

Dale groaned, his spent cock letting a late glob of cum escape.