An expression that a dominant person says to a weak person; especially when it comes to a challenge. The expression was actually more of an insult than an intended joke made toward another person.
The expression "Why don't you bend yo ass over and we're gonna see who the real bitch is" was used by a very dominant person or a bully to insult a weaker person.
-Where are you going for lunch? .... YO BITCH HOUSE!!!
-Where are my shoes? .... YO BITCH HOUSE!!
-Where did you hear that? .... YO BITCH HOUSE!!
or to set someone up, Guess where I'm going tomorrow? ... where? .... YO BITCH HOUSE!!!