Part of drinking games involving beer, or an alternative "Bitch Beer" (Smirnoff, mikes hard, etc.) In games such as beer pong, case races, funneling, etc. If any participant belches loudly enough to be heard by an opposing player they can call SCHULTS! and slap that person in the back of the head. The only way to avoid being schults'd is to touch your nose immediately after the belch.
by PQGV500 February 16, 2011