Girls use this often because they think it's easier to say "I'm fine" then everything that's not. So when a girl reply with "I'm fine" just ask another time if they are sure bc they are probably not fine.
Him: how are you?
Her: I'm fine. (Inside dying)
Him: ok
Da smart-alacky remark dat you glibly toss back at your "little princess/pumpkin" date's father when he warns you, "Whatever you do to my daughter, I'll do to you."
Demurely telling your new gal's dad, "That's fine --- I'm bi" may indeed be sarcastically amusing by implying dat you would actually ENJOY having said paternal dude make you "take it up da bum", but said remark could also "backfire" (pun not intended, but it works well here!), especially if dat family is of the conservative-minded variety... even if they don't truly believe dat you actually meant it, they may still be highly offended at da flippant "either/or" sexual reference, and so the girl may no longer wish to date you, and her parents may not want their precious Miss Vulnerable to be hanging around with "some foul-mouthed/coarse-minded dude" like you.