Slap off. Noun. English. A contest between two people who bear some sort of grudge and attempt to resolve it through the force or impact of a slap to the face.

Slang term for masturbation. First used by an annoyed African-American mother at a Greyhound bus station in Nashville Tennessee.

When someone at the urinal next to you shakes off so hard that you hear their penis making meat flapping sounds. Typically occurs amongst the Hispanic population whom seem to have less conservative urinal ethics.

An activity where two men stand side by side, and take turns slapping each other on the ass as hard as possible.

An activity where two naked or partially clothed men stand side by side, and take turns slapping each other on the ass as hard as possible.

A way to indicate slapping someone of African American decent very hard.

A term used to describe a person who exhibits a lack of control over their movements due to drug use. Usually refers to (but not limited to) jaw movement. Mostly seen in chronic amphetamine users.