@Jacki
Possibly. Never saw the movie, not my style of humor.

@Jeber too bad....I've been trying to figure out where to find the song for years. Not in the credits.

@Jeber I just found the soundtrack song list for D&D. Tom Waites isn't listed with the rest of the songs. I guess I was mistaken.

@Jacki
Some artists do uncredited cameos, acting or providing music. Sometimes the director is a personal friend, something like that.

@Jeber I just found the song.
It's called "Mmm Mmm Mmm Mmm' by the Crash Test Dummies
Doesn't sound as good as the part they played in the film.
That solves that crisis!

@Jacki
Musical mystery solved. Scooby-doo.