A pronger is a complete failure and loser in every capacity. A pronger has a failed career, no money, and is usually a male with no libido left. A pronger cannot get laid and usually lives in a run down neighborhood with his parents. It truly describes the ultimate loser.
The guy did not make his rent payment this month. He is a complete "pronger"
or do your homework because you do not want to be a complete pronger when you grow up.