Petting her knee caps 

To finger a girl in the vagina, or rub her clitoris. Commonly derived from the movie Fubar.

Yeah man, never banged her, I was just petting her knee caps.

Petting her knee caps by Condog4 September 14, 2009

Busted Knee Caps

When she desperately wants to give you head

Oh honey, I wanna suck your di—*thud* awww fuck, my knee caps. (Busted knee caps)

Busted Knee Caps by ǝɹǝɥʇ ollǝɥ October 17, 2019

No knee caps 

A person who will never propose. Refers to the emotional inability to get down on one knee Not to be confused with eternally single; someone without knee caps will stay in long term relationships, but will never actually pop the question.

Sis, your man has no knee caps. If you want marriage and kids you need to move on!

No knee caps by CC Halpert June 9, 2018

Sharp Knee Caps 

The word used for someone who is socially awkward or someone who thinks they are strong. Commonly used as an insult

Person 1: I think that we should talk.

Person 2: no thanks.

Person 3: ok, you have sharp knee caps anyways.

Sharp Knee Caps by Smartcatttt January 23, 2021

I’m Gonna Take Your Kneecaps 

The act of threatening to take someone’s kneecaps, usually done to get people out of your way, but you never explain to people why need them, or how you take them, it’s a smite of magic where you magically make a “Taking Away” motion and there you go you followed through with your threat, you must always squat while performing the taking of the kneecaps, when you take kneecaps be sure to replace them with styrofoam to give your victim an unpleasant surprise when they bend their knees

Person 1: “Haha, hey dude you just cut In front of me.”

Person 2: “So, what are you going to do about it.”
Person 1: “ I’m Gonna Take Your KneeCaps.”
Person 2: “Haha, I’m so scared.”
Person 1: *Takes Kneecaps*
Person 2: “ ahh! My kneecaps! Come back!”

I’m Gonna Take Your Kneecaps by Big Bubba Cheeze April 20, 2019

Nico nico kneecaps 

A very big threat, if someone threatens your nico nico kneecaps you best be runnin. Holds power over the reverse card. Unless you have Danny Devito on you, you're screwed.

This man breaks nico nico kneecaps, aight ima head out.

Nico nico kneecaps by Loaf that's not buttered yet November 25, 2019

Kneecaps 

The ultimate possession everyone has. I have them. You have them. We all have kneecaps

Ya kneecaps, hand em over

Kneecaps by Isawthelight June 13, 2018