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 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

Ur mum

A joke that nobody likes

For example Aiden: Ur mum
Everyone: nobody cares

by KaylaYT February 5, 2022

Mum-off

To have a verbal contest over progressively worse mum jokes. It usually goes around full circle before someone gets mummed-out.

Kevin: Your mum's a slapper.
Joe: Your mum is a bigger slapper!
Kevin: Your mum invented being a slapper!
Joe: Your mum wrote the slapper's handbook!
Kevin: Your mum followed every move in the handbook!
Joe: Are you challenging me to a mum-off?
Kevin: Your mum likes a challenge... etc

by rob1982 January 3, 2013

Ur mum

Fat

It’s simple: fat. What more do you deman from ur mum?

by TheRunawayWagon March 24, 2019

Ya mum

Used after a question, generally as a joke or an "insult"

Ya mum.

by lily_wrote_this December 20, 2010

ur mum

when someone has nothing to say to a sentence, they say the phrase "ur mum" or a "ur mum" joke since they cant think of anything else with their nincompoop brain.

"Ugh i wish you would listen to me, even my mom listens better" "probably because ur mums so fat and her ears are so big even when shes tired of your bullshit she still has to"

by the real fish comfirmed May 28, 2023