mo jon

Someone who is stupid beyond belief. A fucking moron. An idiot.

That guy is a goddamn mo jon!

by Melanie June 18, 2006

mo jon

The "Americanized" pronounciation for the Latin word mojon, meaning "piece of shit"; an individual who think's he or she is "all that", but is not.

Look at the huge mo jon that dog made! That little punk thinks he's tough, but he's just a mo jon!

by Melanie Murray Link June 19, 2006