1
A super loud way of saying you don't believe a single word they just said.
"I think the fuck not? You just said you're gonna fail me?", after getting a D on a math test.
"I think the fuck not? You just told me you're gonna delete my account?", after getting banned from a game.
"I think the fuck not? You just said I'm gonna get grounded?", after telling mom about the failed math test.