What's on your mug?

a derogative comment usually used when one does not have a worthy comeback

X:Whats for dinner? Y:Your mom!

By Stone cold

The obese woman who played 'Jabba the Hutt' in each of her Star Wars appearances.

So when you see your mom with a thermometer up her ass then it's probably obvious that I got it on with her.

By B-Drac

A common quick comeback after being burned. It usually involves some restatement of the harasser's previous statement and is either used as a prefix or suffix of a sentence. 'Your mom" may also have additional burns added to it to make it seem more creative, but really it's just not.

Harasser: Man, you're car is real piece of shit. Guy: Your mom was a piece of shit last night.

By Ready-Liver

People that has no life and bad conversation use it as a combat. People would try to make it sound better by saying extra messed up words

Guy: Sup Faggot Idiot: Your Mom's a Faggot, Ass.

By Anonymous

A phrase indicating lack or amusmant in the subject or lack or paying attention.

"Hehe, my science homework is so easy (it's about space) I don't even have to read the chapter." ":P I didn't even have to read your mom last time."

By Borg