mayo knees

Adjective, Noun - A middle aged mans knees that over time get filled with Mayonnaise and become weak, but gives the same man the feeling he is still young, and can play sports.
Yo Mo, did you see that old dudes Knee snap back balling, he thought his Mayo Knees would hold up.
by Whereshunter March 14, 2022
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Beat Knees

Sex between humans, insertion of the male's erect penis into the female's vagina is followed by rhythmic thrusting usually culminating in orgasm;
Lovers beat knees every chance that they get.
by Rappin Grandma June 18, 2015
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Skin Knees

A British cunt bucket who skinned is knees in kickball like a fucking retard.
by Skin knees April 11, 2022
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tuck knee

The "proper" way to do an indy grab in skateboarding.
involves tucking your back knee into the nestle of your front leg, and reaching your arm over your back leg to grab the board, as opposed to grabbing inbetween, which may result in a "stink bug" pose
you have to learn to frontside air proper! you never heard about the tuck knee?
by akatoast July 08, 2022
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purple knees

To beat someone up so badly that their knees turn purple
Hey Waseema, I'm gonna give you purple knees if you don't shut up!
by Wilycrow February 03, 2017
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penguin's knees

A reference to a fact or misconception that is widely unknown or completely false. Derived from the fact that a penguin actually has knees despite the fact that they cannot be seen from the outside. Commonly credited to the southern region of California.
Despite the common myth, hydrogen peroxide is actually quite detrimental for a wound, it's like the penguin's knees.
by anawesome1 March 25, 2016
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Whip knee

When you plant your leg so many times doing the "whip" that your knee begins to ache
Damn man, I whipped so many times last night I got whip knee
by Theguywhoknew November 16, 2016
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