knees up 

A very informal gathering for any type of celebration. Involving plenty of impromptue singing, dancing, and drinking. Probably Cockney in origin.

On the night their exam results came out, they went down to the pub for a right old knees up

knees up by Backseatogre July 22, 2006

knees deep 

In the same reference as in :balls deep only meaning your dick is bigger and runs deep so deep put her ass in convulsions n to sleep🤤💯

Dam dogg she’s fine I’m going knees deep with this one 🤪💯

knees deep by k187c May 29, 2019

knees up mother brown 

national anthem of cockneyland

aind, knees ap muvva brahn, etc

knees up mother brown by mike read August 7, 2003

knees weak arms are heavy 

Moms spaghetti

yo ted what you want? Knees weak arms are heavy

knees weak arms are heavy by SpaceManZim November 6, 2017

Knees in the breeze 

An expression sometimes used by military airborne personnel to describe the act of jumping out of a perfectly good airplane.

The jumpmaster stood up, looked at the wide-eyed group of new recruits and hollered "Come on LADIES...it's time to put your KNEES IN THE BREEZE!"

Knees in the breeze by mrbronz August 4, 2010

Knees worthy 

A comment a girl will make regarding a guy she'd be willing to perform fellatio upon.

I never sleep with a guy on the first date, but last night he was definitely knees worthy! smack lips

Knees worthy by Clip06 November 30, 2010

Knees to your nipples

is to say to somebody to be scared. aka fear me.

hey yo, knees to your nipples man...

that movie was so scarry i had my knees to my nipples mayn.

Knees to your nipples by wordplayer2u August 3, 2011