Similar to having a case of the munchies except you mean you have a craving for a dead woman's vaginal secretions, and other material that "cums" out when you "munge" a girl. *Note: that this is an acquired taste.
Man, I'm getting kind of hungry, I'm getting a case of the "mungies".
A term created by famous YouTube user "Brookers" in her YouTube video for people who dye their hair blue. It's like how people call redheads "fire crotches." Color of water = blue. Color of blue haired girls crotches = blue.