Top definition
A person who does not drink their beer/liquor during a game (beer pong, kings, thumper, etc), giving them an advantage on their opponents.

Combination of SOBer and fAG
Dude... Your being such a sobag right now. Drink your damn beer pansy
by Jonyh April 24, 2011
Get the mug
Get a Sobag mug for your sister Sarah.