a word used as a comeback when you have no other comeback to use: a word used to get someone to leave you alone

another term for "your mom"
"Hey what are you eating?"
"ur mum."
by olafsfluffyD October 16, 2015
Get the ur mum mug.
The insult of all insults. When you're stuck and have nothing to say, just say 'ur mum'.
"This pizza is still warm"
"Ur mum's pussy is still warm...hurhurhurhur".
by p00_p00 August 30, 2006
Get the ur mum mug.
wen ur frin bein a cheky cunt n da call of duds u jus sey ur mum
"fukin cheky cunt ur mum is hairy"
by YOOOOOOOOOOOO April 1, 2015
Get the ur mum mug.
The apparent zenith of comebacks, used almost exclusively by 12-16 year olds.
Person 1: You sir, are a veritable nincompoop.
Person 2: ERR UR MUM LOL!1!

'I AD SEX WIV UR MUM LOL'
by Dougal September 27, 2004
Get the ur mum mug.
the british form of "ur mom", a overused comeback that is funny if used as a joke or your kidding when u say it.
Person:Fuck U!
British Person: I fucked ur mum!

b_i_t_c_h678: i have sooo much homework.
this1person923: ur mom has so much homework! OH! BURN! WAT NOW!?!?!?!
b_i_t_c_h678: wtf lol
Get the ur mum mug.
A unstoppable force, when your hit with a Ur mum, you should just accept your fate, your life is over.
Joe: Hey do you wanna come over after school?

Bob: No sorry I’m doing ur mum after school.

It was at this moment, Joe got folded
by Harpy🦅 October 19, 2021
Get the Ur mum mug.