When you pee so hard into a urinal that it spatters piss on your pants and your knees are wet for the rest of the day...
by PlayOnPlaya October 19, 2009

by tman March 11, 2004

by WhoIzYou May 7, 2021

The knee-butt is a painful yet entertaining move that can be preformed on friends and ememies alike. The move is executed as follows:
The unsuspecting victim is standing so that their back is facing you. Approach the person, call out "knee-butt!" and knee them right in the ass bone. Hurts like hell. It is customary to call out the knee-butt warning before kneeing. When knee-butting friends it is recommended to knee with care, due to the potential anal crushing power of the move. Grabbing onto the persons shoulders can add a more visually dramatic element to the move, as well as increasing the power behind it.
The unsuspecting victim is standing so that their back is facing you. Approach the person, call out "knee-butt!" and knee them right in the ass bone. Hurts like hell. It is customary to call out the knee-butt warning before kneeing. When knee-butting friends it is recommended to knee with care, due to the potential anal crushing power of the move. Grabbing onto the persons shoulders can add a more visually dramatic element to the move, as well as increasing the power behind it.
Kevin: "Dude why are you hopping around and holding onto your ass like a fucking fairy?"
Steve: "Dustin just friggin gave me the worst knee-butt of my life!"
Steve: "Dustin just friggin gave me the worst knee-butt of my life!"
by Lee T September 24, 2005

The coolest
Lad's dad-Give this lighter to the bug-eyed, unstable looking girl smoking a cigarette. Yea, the one with the hair that looks like a mix between boy band and skater haircut, she will think you're the bees knees for that.
Lad- That's pretty straightforward and easy, that's all I have to do?
Lad- That's pretty straightforward and easy, that's all I have to do?
by Solid Mantis October 15, 2017

eg. danas brother sings and dances to 'its raining men' KNEE-SLAPPER
eg. claudias hair is ranga *slaps knee*
eg. claudias hair is ranga *slaps knee*
by dont you just wish you knew July 13, 2009

by HAHA KYLE H. COLIN B. DID THIS December 13, 2010
