When a female spreads her legs and thrust her torso back and forth making her vagina lips hit one and other, thus making a clapping sound.
I was going to ask my mom for some ice cream money but when i walked in her room she was hunched over clam clapping!
by Nintendo 69 March 26, 2009
lezobo's do it....when two vajinas (preferably shaved) slap against one another making a clapping sound....clam clap.
by HANK703 August 01, 2006
An intense version of the scissor technique used by lesbians. The two girls would crisscross their legs and pound away accordingly.
by ILearnedFromLesbians August 11, 2014