by joe May 13, 2005

by Joe December 19, 2002

by Joe June 09, 2003

by Joe December 01, 2003

When a girl is going down on you, and just as you come you smack her on the back of the head so that it comes out of her nose like smoke.
by Joe May 29, 2003

Sarcastically used to point out an unfunny joke. It originates from the act of slapping one's knee during vigorous laughter. Later took on a sarcastic meaning.
Comedian: I just flew in from Los Angeles, and boy are my arms tired!
Audience member in sarcastic tone: wow that's a real knee-slapper
Audience member in sarcastic tone: wow that's a real knee-slapper
by Joe February 11, 2003

by Joe May 01, 2005
