What not to say on a tour:
"Are the dorms coed?"
"Well, the alleys are coed, but you don't have to have an opposite-gender roommate if you don't want to..." <looks of horror> "well, like, some people do that if they're dating..."
I said that on the first tour I ever gave. It ended pretty badly.
(And living with someone of the opposite gender isn't even that common at Caltech. It's actually pretty rare.)
Also: kids and parents, please ask lots of questions. It makes our job way easier. Don't worry about bugging us, answering questions is a lot more fun than actually having to talk.
