Tales from the Floating Vagabond (1991)

From the back of the book:

Greetings, Heavily Sweating Gamer Person. The name's Hawk Luger, but you can call me Spit. This fine-looking book is something we call a roleplaing game -- more specifivally, a comedy rolplaying game. It takes place in a bar called The Floating Vagabond. If you've never been there, well, it's at the center of the Universe. (I should know; I measured it.) Anyway, it's easy to get to the Floating Vagabond: just take a left at the next corner and walk through the door with all the Harleys parked in front of it. Pretty soon, you'll be seein' stars. If that don't work, well, you'll just havta buy this book. It tells ya everything ya need to know about The Vagabond, comedey roleplaying, quantum physics, Belching for Effect...