Ur mum not cool

It means ur mom not cool

Jimmmy hey Ron ur mum not cool
Ron No u
Jimmy fucking dies

by Nooblegend2769 May 7, 2020

Morgz' Mum

when you're in a really cold pool so you piss yourself to warm yourself up

Jesus christ it's so cold in here time to Morgz' Mum

by iminhellplshelpahhh July 16, 2024

Ur mum

the british way of saying the classical UR MOM joke so if u say ur mum GET OUTTA HERE

UR MUM NO THATS JUST NO

by U3U May 14, 2019

ur mum

a comeback to use to get people away from you

"what are you eating"
"Ur Mum

by pseudonym of ur mum May 10, 2022

ur mum

the mysterious figur who will come and beat you up if you shit in the sink at exactly 4:20am when you shout among us at the top of your lungs 69 times- she will also end up skimming your family.

What are you doing later?
Ur Mum.

by asdfghjkjifhbdkjnmgdlfjbhikwne July 2, 2023

leejays mum

an absolute mythical beast of a woman, perfect in every way inside and out

leejays mum is fit asf

by smellyrabbitOM March 8, 2025

Ur mum

Obviously the kid who can’t even talk and says ur mum. Basically kids just say ur mum gae so what am I talking about?

Yo joe

Joe: UR MUM GAE

Steve: wow you can’t talk

by The guy with a dumb name November 15, 2019