"Yeah, you're telling me, it's been a heck of a place, I'm just kinda glad I didn't dress up for Halloween like I usually do, I put on a ringmaster's outfit, but I was still me. Er, that's actually part of the answer, right there. Things happen here that nobody can quite explain - Halloween was one of them, where people just wound up turning into their costumes. Other stuff happens, though, too. Random rashes of sudden happiness, people switching their sexes, all sorts of weird things. Even the deities here don't know what's going on and get wrangled into it, too."
He paused and then laughed, "There's gods here, too. And people with superpowers."