Ohhhh... well... that bit is from this guy that was on the USO Comedy tour on comedy central... he was trying to figure out a way to say the word cracka more in his bit.. cuz like black people have nigga so we can't we have cracka... and then he made a joke that after one of his shows this black guy is like right on man... you my cracka! and he says to the black guy... see... it doesn't work like that.. cuz only we can call eachother cracka but you can't call us crackas... it was sooooo f'n funny!! :)