your mom 

A normal response when a person is unable to come up with an intelligent comeback. Usually used by those with little or no imagination.

Guy 1: I need to get my car checked out.
Guy 2: I checked your mom out.

your mom by AnnoyoedWithMommaJokes October 25, 2004

your mom 

Something a person would say when he has no way out of an insult. usually never making any sence

Something a person named Chris J. R. would say to everything. Usually followed by something like "thats a quarter!"

person 1: hi, isnt it nice out..

person 2: ur mom is nice out...

ex.2

person 1: thats a monster of a problem

person 2: Ur mom's a monster!

your mom by meph April 21, 2005

your mom 

The act of being one's mom. A justified answer to any question or comeback.

1. Why is your mom touching me there?
2. You know what?! YOUR MOM!
3. Just, your mom.

your mom by Yerr mom December 28, 2005

your mom 

a common comeback, similar to "your face"

"F**k you"
"Your mom!"

your mom by Jamez the Worm October 29, 2006

your mom 

comeback used by witless morons who cant think of anything to say i.e. my friend melissa

me:nice teeth melissa
melissa: ur mom has nice teeth
(ownage)

your mom by melissa January 29, 2004

your mom 

I have a great defintion for this

YOUR MOM!

Numpty: What did do this weekend?
Cool Kid: Umm...your mom!
Numpty: That wasn't very nice!
Cool Kid: Your mom!

your mom by I am le cool July 24, 2008

Your Mom 

Probably one of the most overused comebacks ever, and anyone who uses it is a douchebag.

"Dude your gay" "Well dude, your mom..."

Your Mom by random person =) March 6, 2009