when you insert your penis into a hotdog bun, slather it in condiments and jerk off with it. After ejaculating you then eat the bun along with the semen.
The wad of hair a woman gets on the back of her head after a long night of fucking. Created by the back and forth motion of gyrations as she lays on her back. Generally visible when she gets up to go to the bathroom to clean herself or go to the kitchen for a glass of water.
Chad: Kiersten, what's that rat's nest in your hair?
Steve: Nice fuck bun, Kiersten.
Kiersten: Shut up, Chad!
