Mouff-Mouff is the best cat alive. Usually black and white, he is affectionate and likes food, perhaps too much.
If you cross Mouff-Mouff in the streets, pet him.
A mouth with rotted out or no teeth due use of crystal Methamphetamine. Also may have scabs all over face an body. Meff Mouff is probably on how someone with the lose of or no teeth due to heavy usage of meth saying meth mouth.