Comes from the film Idiocracy. Same as "how come" or "why" just combined.
"Why come you didn't call me last night?"
The combination of the phrases why and how come usually in connection with a question about anything.
Sue: We have to go to that thing tonight.
Bob: Why come?
Sue: Did you just say why come?
Bob: Yeah, why come?
The retarded ghetto way of saying how come.
Why come I can't get my food stamps?
Combinin' 'why' and 'how come' to mean whatfer
If we camed from monkeys, then whycome there still be monkeys?
a combination of why and howcome
Person1: Hey, i deleted all your files!
A question, similar to "how come?" but with more emphasis on the motivations of the subject
"Jimmy your mother and I are getting a divorce"
"Because she is a no good skank"
a term used south of the ohio river by total dolts.
1) i am going to bang my sister
2) why come you want to fuck your sister