m'not - A loud, proud, and trashy way of saying I'm not, like you're

A loud, proud, and trashy way of saying I'm not, like you're the loudest person in the trash pile

M'not going to let you win this argument, I'm just too loud

M'not even mad, I'm too trashy

M'not your friend, I just let you borrow my pen and then I threw it away