The most versatile dis/comeback ever created in the history of your mom. Usually it has no effect or sense (especially when used in response to your mom or when you're talking to someone's mom), but it's hilarious when you use it right.
1. guy: Look at that fat kid!
guy #2: Holy shit! Is that your mom?!

2. guy: What's your favorite food?
guy #2: Your mom

3. teacher: John, how often does 35 + 34 = 69?
john: As often as I 69 your mom every Friday night.
teacher: John! Go to the office, I'm calling your mom!
john: No, I'M calling YOUR mom.
by That ballin' kid January 10, 2007
Teacher: Why didn't you turn in your homework?
Me: Your mom.
-
Teacher: What do you think your doing, sleeping in class?!
Me:...Your mom.
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Teacher: Any questions?
Me: Your mom... I mean, your mom?
by Violetownz January 18, 2008
what you say to anyone who is insulting you, or if you just want to make them mad.
guy 1: you're gay.
guy 2: your mom's gay.
guy 1: dude, that doesn't make sense.
guy 2: your mom doesn't make sense.
OHH BURNN!
by chicken flavored rice May 16, 2008
When inserted into a generic sentence, this is guaranteed to add a hearty portion of sexual innuendo.
1. Nerd: "Stop, you guys!"
Jock: "That's not what your mom said last night!"

2. Repairman: "The TV needs to be turned on first."
You: "I think your mom needs to be turned on first."
by Derrick March 4, 2005
what u say in responce to any question
your mom : so what did u do today?
you : your mom

jen: so what r we doin 2day in french?
me: your mom!
by your mom March 30, 2003
Retort to a negative comment. Often followed by the exclamation OHHHHH!
A-That is one large sandwich.
B-Your Mom is a large sandwich
Surrounding Audience-OHHHHHHHHHHHHH!
by LBW23B July 27, 2005
A phrase used when you have absolutely no idea how to answer a question, or piss someone off. Highly recommended phrase to be used during business meetings.
Important Guy: "Mr. Smith, how long do you think the proposal will take?"

You: about as long as your mom
by Ginza October 24, 2003