by NessPlays64 September 29, 2025

When your knee has a bump under it caused by a tendon popping out from growing too fast, formally known as osgood schlatters, usually most males in middle school will have it, hurts if pressure is applied
by 8th Grade Trapper April 15, 2017

A saying a person does when another person says an unfunny joke but you're being sarcastic about it, indicating it was the funniest joke you have ever heard in your life. (being sarcastic if you didn't get that)
"Hey Billy, why did the chicken cross the road?... TO GET TO THE OTHER SIDE!" *laughs hysterically*
"What a knee slapper, Timmy!" *slaps knee*
"What a knee slapper, Timmy!" *slaps knee*
by lovelyleftorgan777 May 4, 2022

by pcvbg26 August 29, 2011

by Ding dong lama lama December 5, 2021

Street fighter Alpha Dalton von Staffenburg- I was there when the ticking time bomb went off, I saw the blast, I saw his knees get smashed, I saw him drop like a stone. Paulie Mussolini is dead.
Paulie Mussolini- Other than a few scrapes, bruises, and marks, I am unhurt, I was never in danger. I will not give up my happy Jew hunting.
Paulie Mussolini- Other than a few scrapes, bruises, and marks, I am unhurt, I was never in danger. I will not give up my happy Jew hunting.
by Solid Mantis April 28, 2021
