1. Going “tits up”. I always assumed this was a drowning reference, sort of like when you talk about a business going under, except then I thought about it and when you drown you’re more likely to be tits down. Probably shouldn’t have Googled that in public. Apparently it just refers to a naked woman lying on her back, which I don’t see how that’s a bad thing. You’d think a business going tits up would be a good thing. What’s wrong with a business metaphorically showing you her tits? If logic applied at all, the phrase would mean a business fully disclosing information about itself for the purpose of titillation or something. But obviously that’s not the case. Instead I guess it just means getting fucked, like the unpleasant kind, as in getting fucked over. Disappointing.
2. “Don’t know you from Adam.” This one really bugs me because that’s my name. Obviously it means “I don’t know you” but who is Adam and why is having him as a reference important? I’m guessing from the Bible, but what does that have to do with anything? You don’t know that Adam either, because even if that Adam was real, he would’ve died millenia ago. I Googled this too and the only relevant thing I got was that it’s an old “Nantuckerism”. All I know about Nantucket is that there once was a man from Nantucket, and that’s literally all I know about him. Maybe his name was Adam.