Obviously it isn't spelt right yet it comes with such a great meaning of offense. It is basically any joke about someones mom.
*Ganging up on person 2*
Person 1: "You've got a moustache."
Person 2 (to person 1): "Yours is bigger."
You (to person 2): "NOT AS BIG AS YOUR MOMS!!!!"
an expression used by the residents of sydney, australia describing the euphoric sensation of wanting to pull your wang out and let it rip
(Eric) How was your flight?
(Ivan) It was long but i didnt really mind cause there was this fine ass bitch sitting next to me the whole time...now if you'll excuse me I'm gonna see a man about a wallabee