A phrase most often used by wiggers/wangstas and people in chatrooms. It is only used as the last desperate attempt to win an argument, although it really doesn't have any meaning whatsoever.
Wangsta 1: I hate your ass!
Wangsta 2: You're a stupid piece of shit!
Wangsta 1: Shut up jackass!
Wangsta 2: Your Mom!
by Anonymous June 26, 2003
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Comment: "Hey John, your ex girlfriend Sally is telling everyone at school that you couldn't 'get it up' last night!"

Response: "Dude whatever, your mom."
by MxPx_Fan November 5, 2005
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A term used by bored 12 year olds who have nothing to say, but want to sound cool anyway.Means nothing at all.
Jack:How'd ya do on the math test jim?
Jim:How'd your mom do?
by Antisocial February 15, 2004
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A cult within the confines of Key West that brings death and destruction to little bunnies and preps. A gothic group, we rule supreme. Now, Kwy West High School...next the world!!!
YM: For we are all in your mom.
by Voodoo February 25, 2005
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Lame comeback used in a pinch when no other witty retort can be thought up
Tom:"You need a shower you smell like a steaming heap of quivering cunt yeast!" Bob:"Oh yeah well.... That's your mom!"
by ursquishy April 9, 2011
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The most over-used comeback everrrrrr.
I don't like your shoes.
Yeah, well....YOUR MOM.
Wtf?
by ksgfal September 22, 2008
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Your mom is a phrase used by people who are too stupid to come up with a answer to a simple question. Or don't answer it out of arrogance. This phrase is used a lot by spoiled college boys who's mommy and daddy paid for their car, tuition and ipods.

Obviously they are mommy's boys since they love their mommy so much they say your mom. They must love their mommy so much. See mommy's boy
Person: "Who pissed on the toilet seat?!"
Arrogant cunt: "your mom!"
by clueless_furball November 1, 2006
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