Based on the lyrics and video for "Gravy Insane," the brand new song from Gustafer Yellowgold, perhaps the follow-up to the excellent Gustafer Yellowgold's Wisdom Tooth of Wisdom will explore slightly darker paths. The song recounts how Gustafer's forest friends become gravy gluttons, keeping in line with the Gusta-verse's previously established food obsessions ("I Jump on Cake," anyone?).
Then again, reminders that bats can't drive cars are inherently humorous, IMO.
Gustafer Yellowgold - "Gravy Insane" [YouTube]