Coitus and Cartoons

Look! An MRI of people having sex!
Coitus!

How to Have Sex, complete with cheezy cartoon drawings!
Right here.

Humorous images from the best trilogy ever made, The Matrix:
Asher's Attic

Cute drawings from Blogography:
HERE and HERE.

Aaaand, the most dumbass haircut I've ever seen:
Dumbass indeed.