a word used to discribe a person who is awesome and also intoxicated. Is most commonly used in conjunction with several swear words.
ie. "Craig you f@ckin MUNGIN cun&"
When 2 people commit the act of digging up a deceased female body. One of the persons involved places their mouth over the lower region (vagina) of the corpse whilst the other jumps on its stomache. Therefor causing the insides of the corps to exit the body and enter the first persons mouth.
Me and my friend went up the graveyard today to do some mungin.