Kneecapper 

A person who loves to bust kneecaps.

Have you heard of what the Kneecapper did in D&D? It's insane!

Kneecapper by Karma Dragon June 9, 2019

kneecapper 

noun: nickname for a handicapped person

Lars: "Dude, that guy crossing the street's wobbling in the crosswalk at about 0 mph."

You: "He's a kneecapper, duh."

kneecapper by Janpen June 5, 2010

kneeslapper 

When one finds something extremely amusing, while seated the person slaps their own knee in jubilation.

That joke was a hellava kneeslapper, I laughed my ass off.

kneeslapper by Count Funkula June 13, 2003

kneecapping 

The act of permanently destroying someone’s kneecaps. Often done with a firearm (as popularised in film and television), a baseball bat or lead pipe or other blunt instrument, or a power drill (often used in conjunction with a countersunk drill bit and popular with the IRA).

When the police heard the screaming, they knew that Shamus had been on the wrong end of an IRA kneecapping.

kneecapping by Don January 7, 2004

Kneeslapper 

The most extravagant reaction to something of funny, or toast-worthy nature, where someone uses their hand to make contact with their knee typically in a very absurd and flamboyant manner.

Guy: hey guess what
Guy#2: what?
Guy: UR MOM
Guy: performs a kneeslapper

Kneeslapper by Toastingurmom May 8, 2018

kneecapping 

(v) ne-kah-PING:

SHOOTING A BULLET INTO THE KNEE

OR

PLAYING FOOTSIE WITH KNEES

"Murray was kneecapping Rochester Jackie under the table, but Caleb didn't notice."

"If you all don't shut up I'm going to have to take out a .22 and start kneecapping."

kneecapping by PENIS MCVAGINA August 17, 2011

kneecapping 

What the Irish IRA and PIRA did when other drug dealers got in their way, they'd take a pistol and shoot him right in the back of the knee. This would shatter the knee, thus crippling the victim for life.

kneecapping by Anonymous October 4, 2003