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
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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
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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
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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
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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!

by Dougal September 27, 2004
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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
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