I was on a panel. At a Dr Who convention. Very early on a Sunday morning. With Paul McGann and the lovely Susannah Harker.
Just as the panel started, they turned on the VERY BRIGHT LIGHTS, and, just as suddenly, my hangover switched on. Viciously. Nastily. In front of two hundred people.
I spent the next hour trying not to throw up on Susannah Harker's shoes.
I was on another panel later that afternoon. By which time my hangover had abated. It was oddly nice, as I got to be blisteringly truthful about the horrid project I've been working on for the last year. You can be honest with Americans, and they've just supportive and encouraging - rather than looking to assign blame.