I aspire to get to this level of perfectly tuned silliness:
"The coffin was heavily enslimed with ages of accumulated muck, but strange glyphs could still be seen on its rim, and along the side of the lid. No sentient being had ever read them; they had been placed on the stone in some unfathomable way by a group of sinister creatures who had left no trace of themselves, not even the glyphs."
- Mark E. Rogers, "The Book of the Dunwich Cow," in The Adventures of Samurai Cat
I don't really do gonzo. I don't really do all-out silly. But there is at least some silliness in my games. I don't know that I'd stick the above into my dungeon, but it does inform what I do pretty heavily.