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243.
A phrase used when somebody doesn't know any good comebacks.

Also used as part of a joke

The woman who gave birth to you
Person1: You're so gay
Person2: Your mom

Your mom's so fat she stepped in the ocean and said 'Who put this puddle here?'

Person: I'd like you to meet your mom, Casie
by Stepheli November 10, 2005
 
22.
when theres a perfect chance to rip into some one infront of his friends
big jock-"hey, im gonno bang your head against the wall, cause im a big stupid jock"

defensless little guy-"and ill bang your mom so hard up the ass that ill knock her teeth out"
by your mom July 11, 2003
 
23.
the best comeback ever.
"dude get the fuck off my playstation i wanna play with it now!"
"your mom wants to play with it!"
by alittlestreetgurl March 31, 2004
 
24.
Why you should listen to the teacher in class.
(teacher finishes lecture)
Teacher: Okay now students, you may now begin your work.

Ben (whispering): Hey Chris, what are we doing?
Chris: Your MOM!!
by Nytesdawn October 30, 2012
 
25.
1)A mindless insult when one has no other comeback.

2) Used in the form of a "Your Momma"
joke (see below)
- "You suck balls, man"
- "So does your Mom"

~OR~

- "You're such an idiot!"
- "Your Mom!"

(2)YOUR MOMMA JOKE

- Your Mom is so fat, she got hit by a bus and said, "Who threw that?"
by (c) RiCaRdO July 08, 2004
 
26.
a word that is used when you don't feel like answering a question that is asked, even if it doesn't make sense.
your sis: dude, what are you watching
you: your mom!

bob: hey, what time is it?
you: your mom!
by texas August 04, 2003
 
27.
the only universal comeback. only known rebuff: "what is this obsession you have with my mother?"
an interjection, which can be inserted as the noun in every sentence in the english language.
debater one: my opponent is guilty of using a fallicy, therefore...

me: YOUR MOMS A FALLICY!!
by Link the Wolf May 03, 2005
 
28.
An entirely overused phrase, popular among teenagers. Frequently used when speaker is not thinking. The outcome tends to be something like this:
Me: "What are you doing?"
You: "YOUR MOM!"
Me: "That sounded really bad."
You: "Shit."