the knee slappers

A group of nine friends who make weird jokes and react to them by saying "that's a knee slapper, har de har har" and slapping their knees.

Knee slapper #1"And then the whale said, wait whales can't talk!" the Knee slappers "That's a knee slapper, har de har har!"

by A knee slapper April 6, 2013

Knee slapper

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".

What do you call someone who doesn't fart in public?

A private tutor!!

-knee slapper

by MegDar September 20, 2009

Knee Slapper

Sumthing very funny and ridiculous

Thats humungous.....
Thats Wat She SAid

ROFL THATS A KNEE SLAPPER!!!

by SALKFJsalfk February 17, 2008

Knee Slapper

When someones penis is so big that it slaps the inside of their knees when they walk.

What size condom would you like?

Let's just say it's a knee slapper.

by Erak22 September 27, 2009

knee slapper

A blunt that is so large, or otherwise so potent, a hit causes you to slap your knee and say "GAH'DAM."

We's burnin knee slappers in this bitch.

by The Pizza Man April 20, 2006

Knee slappers

When a woman has saggy old lady boobs that hang so low they slap her knees when she walks

I'd totally do your mom bruh, knee slappers turn me on

by JarMa13 December 3, 2018

Knee Slapper

1) An otherwise unfunny, awkward, or just stupid joke. Usually a dad pun or something of the sort. Said after this to show that it should have never been said in the first place. Invented by hillbillies and rednecks when sitting on their porches, slapping their knees when somthing funny happens.


2)said after something funny and stupid happens.

1)
dumb guy:"Two peanuts are walking down the street, and one of them was assaulted!"

normal guy (slaps knee and fake-laughs):"Wow! That sure was a knee slapper!"



2)
guy skates and falls off rail, hurting his knee and friend laughs.
Later they are talking and laughing about a dumb joke.

friend:"wow that sure was a knee slapper!" (slaps knee)

skating
guy:"yea!"(slaps knee very hard, and dislocates it from the earlier accident)

friend:"no that's a knee slapper!"

by dhawk123 March 8, 2009