The use of this term comes from the word (biscuit), meaning
white boy, which no one other than white
people can use without becoming very offended. The term (ass biscuit) refers to the cheapest, skankist white
prostitute you can find.
I can't believe you
fucked that ass biscuit. OR Dude, I
saw your
ex last night at the bar, what an ass biscuit!!