An insult toward someone meaning they slap vaginas. (Not in a nice or kinky slap either. Just a mean harsh kinda "Fuck you" slap.)
by Fatdog700 March 2, 2018

term used by investigators to describe a suspect/target who requires one slap to start him talking and a second slap to shut him up...
by sheila in the car May 18, 2009

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 luckylewk July 30, 2004

A semi-affectionate term for night club podiums which the drunkest/most extrovert members of your party will want to dance on.
by rmg September 29, 2003

A lady who has the appearance of being prim and proper. Well dressed, polite and seemingly perfect but deep down she's a slapper.
by Lily & Becky November 5, 2010

A lesbian.
by The Atomic One May 7, 2011
