Munchkin Master’s Guide, hardback rulebook for The World of Munchkin
“Welcome Friend. We know what’s been going on-the PCs with weird classes, the races that don’t work the way you remember from That Core Book We Can’t Mention By Name, the spells which are, frankly, stupid. We know that your game has been disrupted by silliness and grotesque puns. And we know that some of it is hauntingly familiar.
We know all this you see, because we wrote it. Sorry ’bout that.”