When one gets home from school and thinks about doing homework for math class, then goes to look up what does Calculus really mean on the internet, but then he remembers that extremely hot chick in class with
the cheerleader outfit, that was giving him the I wanna fuck stare, while pulling up her skirt a little to reveal her perfect
gams, and then he gets severely distracted by the
gigundous amount of porn there is on the nets, and decides instead to spend the rest of the evening shooting a load off. Then after
shooting off waterfalls of cum, passes out and completely forgets he even had any homework at all.
In other words it means fulfilling your inner animal need to release sperm, or thinking with your dick, instead of using your intellect to figure out things like math, in the thinking fucking part of the brain.
Math Teacher: "Ok everyone, turn in your homework, oh guess what we have a
surprise test today!"
McFly: "Aw shit I spent the night looking at porn and beating off, cause
Mary Jane Rottencrotch keeps giving me the fuck me eyes in her cheerleading uniform."
Biff: "Oh man well you're fucked. I guess you forgot to do MY homework too, man quit jerking off McFly."
Mary Jane Rottencrotch:"Were you thinking of me when you were spanking?"
McFly:"Dammit quit being so hot. Why can't I just do my homework instead of
slapping the salami all the time?"
Math Teacher: "That's because you are young, dumb and full of cum."