They lead to all kinds of crazy things! There's a room that turns you into a cat, a room that puts you in your underwear, a beach, a garden, a room that swaps your bodies, a room where you magically swap gifts, although I don't think it's open anymore..

[The first three rooms he mentioned are still tender from his memories of the other day and he tries not to think about them too hard.]

Basically, they seem like they can be pretty much anything. Some have effects, and some are just locations. Sometimes they trap you inside, too, so watch out!