Probably the most over-used, unintelligent and pathetic comeback phrase and/or insult ever imaginable in all of humankind.

Not only is the useage commonly meaningless and inaccurate, it's a piss-poor and half-assed attempt at trying to offend someone who is clearly clever and better at insulting you than you are at insulting them.

The term is also pretty annoying, petty and pitiful.
Ex:

Person #1: I see that you are overweight, unlikeable and have a horrid personality... Who taught you to be the way that you are, you skanky slut?
Person #2: Your MOM!
Person #1: I suppose that makes sense, since you've never met with my mother or have ever been acquainted with her. Whatever. You suck at making insults.
Person #2: Um... shit, I guess you're right.
by Brandi8888 October 4, 2011
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To repeatedly answer something like "your mom" to any question until the person you are answering to is on the floor, screaming out the name of a third-rate comedian repeatedly.
Bill: What are you doing?
John: Your mom.
Bill: No seriously?
John: Your mom.
Bill: It's not funny!
John: Your mom is not funny.
Bill: Stop it!
John: That's what your mom said.
Bill: BOB SAGET! BOB SAGET! BOB SAGET! BOBSAGET! BOB SAGET! BOB SAGET! BOB SAGET! BOB SAGET!
(Tim walks in)
Tim: What happened?
Bill: Your mom.
Tim: ROB SCHNEIDER! ROB SCHNEIDER! ROB SCHNEIDER! ROB SCHNEIDER! ROB SCHNEIDER!
PWND!
Bill: I love your momming
by wahausfhiahfs January 8, 2009
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It's referrering to one's mother. And how she needs to do her dog.And is not referring to your mother at home
OMG YOUR MOM! She's such a hoe!
by That's Hot March 8, 2005
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The person who gave birth to whom you are addressing, not necessarily a joke.
"Your mom is a very nice lady."
"It was good to hear from your mom the other day."
by AdamOpp May 16, 2010
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your mom can be used in plenty of situations pertaining to jokes, or diss's
If someone responds to something you said by saying "your mom!"
chances are your mom is one of the following.
1- a MILF,
2- hot
3- fat
4- extremly fat
5- A whore
6- ect..
a)"dude, what did you do last night?"
b) "Your mom!"

or in a negative context;

a) "oh god whats that smell?"
b) "Your mom!"
by Maaadie July 18, 2008
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A word used by unstable 30 year old men who spend all day in lesbian chat rooms and can no longer masturbate because of excessive raw skin...
Person 1: "are you in lesbian chat rooms again?"
Person 2:"well....uh...YOUR MOM!
by Jerry Rules! September 3, 2005
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1. Vague insult used by exasperated pimple faced teenger.

2. Punctuation for anything at all, ever. Also retort for anything at all, ever. Doesn't have to make any sense, at all, ever.

3. Slut.
"I went to see Matrix Reloaded yesterday!"

"I went and saw your mom last night!"

"That Astrovan demolished the Echo."

"Your mom demolished my echo last night!"
by Skyline Rescue Dart May 24, 2003
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