when a person has consumed to much substance and is in a stage of catharsis.
Have you seen the state of Bob? yeah, he Monged Out on the sofa
מאת wood chuck chucker 12 בדצמבר, 2008
1 more definition
A term used to refer to someone who is unable to speak due to a large intake of cannabis
Don't even talk to that guy, he is monged out!
מאת Goodguygav 1 בפברואר, 2011