[Maybe it's a little meanspirited, laughing at the man like this. But in his defense, he's also laughing at himself. Nine times out of ten, that was exactly why Vash was a foreign face. Unfortunately for Vimes, though, in this case it's the furthest thing from the truth.]

Not quite! [Though there was some running involved, but only because he was hungry!] I just woke up here. No idea how it happened. I know it sounds weird and convenient, but I promise that's the truth!