All the other
people suck. It means your mother is a hooker...seriously...not hard. Thats what it means. Not stupid or an arsehole...just that yo mamma is on the
game.
People use it when somone is a cunt, like most swear words..but thats not what most of them mean.
"Man, apple martin, thats one fucked up name, and I heard yo mammas a right git?"
"Fucking right man, have you seen Vanilla sky?"
"You are a git, yes you, the one
reading this, you
may not know, but yo mamma is not where you think she is, shes in my friend's
bed..."