When you dig up a chicks 2 week old body and start to eat her out, then your friend would either leg or elbow drop her stomach, causing all of the maggots and fluid to go into your mouth and down your throat
"Hey Steve, want to go munning?"
"I cant man, I'm still sick from last time"
Also can be used as the act of munning ex to "mun"
A munted, intoxicated state resulting in paralysis and amnesia where one ultimately wakes up unconscious in a shopping trolley in the middle of Bunnings.
I was so munningsed that, after shaving the hairs off my tongue, I began trying to remember what happened the previous evening.