A term from the popular YouTube livestreaming show, GTLive. MatPat, one of the two hosts of the show, has explained that it originated from his 7th grade teacher who would give her students a clap and a half as a form of ridicule. MatPat has since adopted the gesture as a sign of appreciation towards the GTLive audience.
by Live Laugh Love GTLive June 24, 2017

by clapqueen420 November 23, 2016

by anonymouserat February 17, 2019

by Alexandria Princess May 3, 2014

by momofizzlecertifiedizzle March 2, 2011

The act of vigorously whipping your dick back and forth (left and right) so that it makes contact with your legs. The resulting impact produces a smacking sound, and if done rapidly, it can sound like clapping.
Instead of clapping with his hands at the end of the show, George stood up, dropped his pants, and started penis clapping like a boss.
by Cactus92 November 14, 2011

The sound of gunshots in the old Magnolia projects of New Orleans, heard from a distance and thus sounding like a loud clap. Track by Juvenile, Wacko, and Skip that has nothing to do with a bitch ass cheeks smackin'...
Y'all hear that Nolia clap? Some shit must be goin' down in the jects, lil wodie pry jus got his wig split.
by HB VL September 18, 2013
