Going by your posts so far, it looks to me you'd have a great book for humor publishers in particular. I assume you've tried companies who publish humor as well as other types of books, but if not, that looks like your target audience. There might be publishers strictly of humor, too. I typed "publishers humor" into Google and there's some good links to start with. You've probably already tried that, or something like it, but I'm trying to think of things to help.