To invent a nonsensical saying and convince an
ESL student that it belongs to standard
English idiom.
Kristen: That just slaps my
goat!
André: What hell? What does it
mean?
Kristen: Oh, that's just a common saying
people use when they're upset. It's like "grinds my gears", but more backcountry.
André: Ahhh. I see.
(André just got goatslapped!)