while in church (or any other religious ceremony/praisy thing) someone farts loudly (or softly) and everyone looks at the certain person and makes a mean face.
often happens to a foolish person.
Max: Josh told me that in church the other day some person farted really loud and every person gave her a dumb look.
Sam: *laughs* haha wow, was it Jordan?
Sam: She is so Church Pyoo prone.