Some bits are amusing, but much more is just confusing. Confusion isn't really funny, to me.

Oots is funny because it pokes fun at D&D and other paper-pencil RPG games. Just about any Oots strip is funny.

I don't understand what Erfworld is poking fun at. There a thread here wherein the author says he doesn't plan on explaning any of the humor. So...I suppose this is written for the people who "get" it, and not for the rest of us.

Oh, and I have to add that the baby talk ("Erf" for Earth, "Dwagon" for Dragon, etc.) is just annoying to me. Sorry.