A fork of Rural Dictionary
someone who is not quite all there in the brain category; they do stupid things, they probably have issues with being gainfully employed, they sit in strip mall bars and talk about their old glory days in high school
He's not going to work today, he's a mongie.
someone or something that presents as being rough around the edges, shabby or not quite up to scratch.
Janice felt a bit mongie when she awoke with a throbbing hangover and had somehow misplaced her underwear. She had fallen asleep in the deli section of her local supermarket.