As noted elsewhere on the thread, it's originally a Hitchhiker's Guide joke, a description of humans. It was also used as the title for one of the later books i

As noted elsewhere on the thread, it's originally a Hitchhiker's Guide joke, a description of humans. It was also used as the title for one of the later books in the series. I wouldn't discount your explanation, but Rhinehart pulled that name from a very popular source.