Well, shit in my mouth and call me your sister
An sarcastic exclamation that can be used in a variety of ways. Usually used to to emphasize how glaringly obvious something that has been said is.
A: I had to go to school yesterday.
B: Well, shit in my mouth and call me your sister - student's going to school? Really?
B: Well, shit in my mouth and call me your sister - student's going to school? Really?