How to be a conferee

I think I've finally learnt what it is to properly participate in a conference, and that is to not actually attend any talks, but spend the whole time talking to people. I suppose this should be obvious, but I'd never really quite got to that stage before. Only now, when I have both past and future employers as well as current collaborators to talk to, I end up spending the whole day talking maths and drinking coffee. And so now, at the end of day two, I find that both my brain and my bladder are full. Emptying one is easy...