Definitions by NumetalFag
Nump
1. To approach a stranger and slowly rotate your hips while crossing your arms across your chest in a mummy-like fashion and yelping "Nump!" in a high-pitched voice. Inspired by the two legends, Butch and Mummy fart.
2. The act of numping.
2. The act of numping.
Nump by NumetalFag July 9, 2009