Five?

"Five?" You guess, figuring you have some statistically insignificant chance of getting it right. The ruler crashing down on your engorged cock makes you pretty sure you got it wrong.

"I told you the pills had side effects. Increased arousal..." your stern school mistress lifts the writing tray up and lifts her skirt over her straining sissy shaft. "Loss of inhibition..." you wonder what she means as you suck her salty precum through her nylons and keep greedily sucking on the head. "Increase in both dominant and submissive desires with positive reinforcement in the early stages making the shift more permanent toward either side." You wonder if that means you should do reps on her thick clit even faster so you don't get too submissive? "And if the subject ingests semen within the first 24 hours, it takes on addictive properties." You greedily guzzle Mommy's milk, too far gone to care about whatever silly side effects she's buzzing about.

"Sigh. You might as well bend over my desk so Mommy can fuck you stupid. That's literally by the way, too much semen intake is not only addictive but also causes that foggy fuzziness you're feeling to become stronger...and permanent." You have already peeled your shorts off and are pulling your cheeks apart, your grunts getting higher in pitch as you grow impatient for Mommy to stop talking and give her manly man his reward.

She slides in easily, your slobber and sweat providing lube for her to push her pretty cockhead past your tight ring. She stretches you slowly, but you need to feel the burn and start grunting, well yipping, as you push back onto her shaft. "Oh, my bad bimboi, want's it rough? Mommy can play rough!" You howl in ecstasy as she start's pounding you as hard as she can. Your cock hard and throbbing and spraying all over the desk. You lap it up mindlessly as she fucks more out of you. The orgasms hit you like concussions. You see stars, taste colors, hear a choir of angels fucking, smell your brain boiling and feel every inch of your taut, tight body throb and spurt. Your Mommy finally fills you with seed, your hungry as squeezing down tight to milk every addictive drop.

"Muh Mommee wan muh!" She sighs sadly as she scoops the cum from your gaping ass and feeds it to you while she strokes her shaft to hardness again. You are on it in seconds, slobbering up and down her throbbing clit and taking her into your mouth and all the way down your throat. It's the beginning of a long night of sucking and fucking. Your Mommy trying to convince you to stop before you end up a total twink brainless bimboi Bitch, but of course you don't listen.

You eventually curl up, cum coated, next to her in bed and drift off to a dark dreamless sleep.