* Slang for 'Your Mother', meaning the person who gave birth to you. Your biological mother.

* The ultimate end to an argument due to the difficulty to respond to it.
* Hey Neil, I really like your Mum!
Dude, you what? That really ain't cool!

* What the hell have you done to your hair?
Your Mum
.......(silence)
by neil_the_ant June 5, 2004
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A poor insult usually used by someone of limited intelligence as an insult.
See trev
Person A: You are an unintelligent troglodyte
Person B: Well...Your Mum!
by Munk July 23, 2003
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as described above by almost everyone else.
You all missed the best use of 'Your Mum'

I use it on my kids.

DONT think about it for too long...Your head may explode
by Dusty Munchkin February 13, 2010
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The best phrase/come back/retort/saying etc that anyone on the earth can say.
it's simple and easy to remember.
It never gets old and is always funny in nearly all contexts
Hey wat u doin?
your mum.

are u free on friday?
your mum is free on friday.

wat dya want 4 breakfast?
your mum

y r u so l8?
your mums l8.

y are u sayin 'your mum' all the time?
cos of your mum
by mistercooool July 27, 2009
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A comeback that can be funny if you use it at the right time, but not funny if you overuse it.
Good example:
Antonio: Who's doing cork? (For geography project)
Georgia: You mum is!
Mary: Is your dad's name cork?

Hahahahaha.

Bad example:
Person 1: Hey, you penis is so small you can hardly see it!
Person 2: Your mum.

Not funny :|
by Georgia--xo-- September 2, 2007
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A comeback when you can't think of anything to say. A funny term in general.
1: Shut yo melted cadbury's cream egg looking ass the fuck up
2: Your mum sucks willy
by Kazotsky Kick December 7, 2018
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