You can't point to anything that's obviously bad. Nobody's done anything you could clearly explain. But you're in a situation — with a person, or in a place — and something just feels off. A quiet, uneasy feeling in your stomach that won't go away. The tricky part is that everything looks normal on the surface. If you said you wanted to leave, or that you felt weird, you couldn't really give a reason that would sound convincing. You worry you're being silly, or rude, or that you'd be making a fuss over nothing. So you're standing there, with this uneasy feeling pulling at you, trying to decide whether to listen to it — or to talk yourself out of it because you can't fully explain it.