I, without a doubt, am *bollocks* at dancing in any situation. It looks like someone is tazering a scarecrow. I saw the clubbing thread and immediately hated myself a little more for my shocking ineptitude.
It's worse, I think, if your gf/bf CAN dance, because then you end up in a club/at a wedding/whatever and they're looking great, and others are looking great, and you look like you're trying to put out an invisible fire.
So: can you dance? And are you showing your partner up by doing so or feeling cripplingly inadequate?