What?

"Uhm...what?" You hope stalling for time might at least buy you a hint, but then she exclaims!

"Exactly right! James Watt perfected the steam engine, came up with concept of horsepower, and the SI unit of power is named after him. I'm so proud of you, my brainy, brawny baby! Now, about that reward..." She pulls the writing desk up and pulls you up into a deep kiss. She is forceful, pinning your tongue down with hers and sliding her hands down your back and slipping them into your shorts. It would be so easy to let her take the lead, half of you wants her to...especially the bottom half. But if being a man were easy, you would have done it a long time ago...

"GRRR" you kiss her back, harder and hungrier, swallowing her tongue then feeding her yours. She stumbles back, you lead her backwards to her desk and rip her blouse open spilling buttons to the floor and her breasts in your face. You give her breasts sucking kisses leaving hickeys all over her supple skin. She whimpers and writhes out of her tight skirt impatient to have you inside her. Even more impatient, you spin her around causing another shrill giggle that gets you growling. You bend her over and rip a hole in her nylons, this time earning a wet whimper. You peel your shorts down and line your cock up to her tight hole. You would swear it had doubled in size and thickness...that would still put you in the distinctly average range, but you don't care. You're going to make her feel it.

Your hands dig into the soft flesh of her ample ass and your pull her balls deep on your dick while thrusting your hips with a low roar that ripples through her yielding flesh. You slam savagely, again and again, forcing pained whimpers from your mewling mommy. She's tighter than you would have imagined, or maybe you're thicker you think with a cocky smile. It gives you an idea...

SMACK

THWACK

WHACK

Her ass shakes sublimely with every blow, her yelps as much ones of surprise at your strength as from pain. Now she's trying to buck back, yelping and yipping becoming lost in your animal savagery and reverting herself. "You like that?! You like getting GRRR spanked and NNNGH stud fucked by your son? Do you, you ROAR sissy slut!?"

"YES! YES! I LOVE IT! FUCK ME HARDER, POPPA BEAR!" You let out a wild howl that starts in the pits of your soul and erupts in your cock. Every perverse perfect feeling of pleasure is distilled, crystalline in the explosion of your thick seed into your bitch's cunt. She start's spasming and shooting herself, and her climatic convulsions milk your cock so hungrily they coax out a second load from you. You collapse on top of her, spent and out of breath, but your cock is stirring inside her, and you feel her squeezing down on you...

"Wait! We can't...if you...oh fuck your cock feels so good in mommy...if you keep cum too much in the first 24 hours of taking your pills, you will regress to a primal state. You will just want to fuck or be fucked. We have to stop."

You think about it for a second...do you really want to end up a fuck monkey? Hmmm...it does sound pretty hot. But you still want to be a man, right?