Usually performed while under the influence of alcohol. While when dancing in a large group of people you stick your hand into the air with it cupped at a grabbing angle while laughing obnoxiously. You then reach down and grab the crotch of some hot unsuspecting babe. This behavior has a tendency to piss off some ladies boyfriends and to get you kicked out of clubs and bars. I speak from experience.
As Bellows drank beer among all of the hot female dancers, he decided then and there to do the crotch dance.
by Cramerica Industries January 14, 2007
Michael was riding his bike and heard Rupert's car pull along side him and yell "move it you dancing crotch"
by Willie El Perro May 2, 2011