Back in my chan days we were very sensitive about maintaining the exclusivity of our boards. This is the purpose of rule 1 (do not talk about /b/) and refrains like 'lurk moar'. Posters that did not understand the boardculture were shouted out, and memes and lingo were made deliberately abrasive to deter newbies and tourists. Of course, this only lasted so long.
It certainly seems like much more attempted comedy than serious roleplay though.
OT: The hot page does look funny. I'm not sure if I ever could enjoy something like this though - I seem to lack imagination. Perhaps it's the same reason I can't get into Roleplaying games (D&D, or online variations).
Internally it was a ton of fun with the improv. We had incredibly good chemistry in it all. But externally it was a riot. Our game expanded to cover a huge table space. Others were starting to gather. Our play became a performance for everyone else, especially those who weren't in on the joke.
Definitely one of the funnest moments I've had.
The rules are here:
When posts were done well, there was a sort of absurdism that was lovely. As it’s gotten more popular, the absurdism has been replaced with random nonsense (like another commenter wrote, “who keeps trimming penises into my hedges?”). Comments on posts like this devolve into “one-upping” each other on the randomness, which really takes you out of the absurdist world.
I think MUSH is closer to what you're suggesting.