To shovel food or "munch" into someone's face as they sleep.
While Andrew was sleeping we hit him with some mad gorilla munch.
A highly infectious STD, commonly found in celiacs. One of the first stages in the celiac disease, leading to more serious stages such as Krispy Koala, or even Leapin' Lemurs. Originally derived from a supposed sexual encounter with a gorilla, the spread of this disease must be stopped at all costs.
Check out Lauren, I heard she's got Gorilla Munch.
Oh man, Grant has definitely got the munch.