When you’ve finished crossing swords with your mate in the urinal and need to shake the drippers off so you slap your penises together.
by Dr.EvilRaj July 26, 2018

A gnome that likes to tickle your asshole so much that you shit, and he slaps it back up. Usually causes constipation.
by allahu Ackbar May 5, 2017

A shot of any whiskey chased by a solid slap to the face. The slap is usually delivered by a trusted friend, and gets less painful the more drunk you get.
"Yo man I'm gonna mack on those skanks over there, but I gotta work up my courage. Do some whiskey slappers with me."
"The party got pretty crazy, there were a bunch of guys doing whiskey slappers in the backyard you could hear throughout the entire house."
"The party got pretty crazy, there were a bunch of guys doing whiskey slappers in the backyard you could hear throughout the entire house."
by Party_Rock August 21, 2012

A person who enjoys throwing rocks into cow pats as a form of entertainment.
May also be used as an insult when no good ones will come to mind.
May also be used as an insult when no good ones will come to mind.
by renidragger October 2, 2010

adverb. A term used to describe a dumb-ass joke. Its inception was the result of someone noticing their friend slapping their thigh/knee when a joke was told. It's an official "knee slapper" when the person laughing sqints their eyes, slaps their knee, and can barely speak due the amount of laughimg taking place. This definition is considered a "knee slapper".
by MegDar September 20, 2009

by 79_elko February 14, 2010

by Barry Beef September 1, 2011
