These're sounds of stomach growls and gurgles used mostly by (but not limited to) sound designer Jeff Hutchins.
Used in
TV Shows
- The Marvelous Misadventures of Flapjack
- The Powerpuff Girls (Pre-2016 episodes TBA; heard once in "Save the Date")
- The Powerpuff Girls (2016 TV Series) (Heard once in "Save the Date")
- SpongeBob SquarePants (first used in "Suds")