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Knee-Slapper

/nē/ /slapper/

Noun

1. A joke; typically a pun or otherwise regarded “Dad-Joke”, the humour of which prompts an audible slap-of-the-knee from one or more of the parties involved.
Ron: “So me and the wife were down in Mexico last month, and she twisted her ankle at Salsa Night”.

Gord: “Oh no, what did you do?”

Ron: “I called ‘Nine-Juan-Juan’”.

*Audible laughter and slapping-of-the-knee*

Gord: “Jesus Murphy, Ron, you really had me going there for a second. Now that’s a Knee-Slapper”.
Knee-Slapper by be4nz1111 August 20, 2023
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knee slapper 

Sarcastically used to point out an unfunny joke. It originates from the act of slapping one's knee during vigorous laughter. Later took on a sarcastic meaning.
Comedian: I just flew in from Los Angeles, and boy are my arms tired!

Audience member in sarcastic tone: wow that's a real knee-slapper
knee slapper by Joe February 11, 2003

knee slapper 

something that is stupid and funny at the same time
Guy 1: So a guy walks into a bar...OUCH!
Guy 2: ROFL THAT'S A KNEE SLAPPER! *slaps knee*
Random Guy: Oh yeah? How bout a face slapper! *slaps Guy 1 and 2's face*
knee slapper by Skullex May 18, 2008

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
Knee slapper by MegDar September 20, 2009

Knee Slapper 

Thats humungous.....
Thats Wat She SAid

ROFL THATS A KNEE SLAPPER!!!
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.
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."
knee slapper by The Pizza Man April 20, 2006