One saying that my mom uses a lot is “I don’t give a rat’s ass,” which of course means “I don’t care.” But growing up, this baffled me.
“Mom has a bunch of rat’s asses somewhere? And I’ve never seen any? They must be pretty valuable because she’s never given one to anyone.”
Like she inherited them from my grandfather, he made a killing in the rat’s ass market and got through World War 2 with his rat’s asses stuffed in his mattress.