In craps, betting wrong means betting on the don’t pass line (against the shooter).
Betting on the don’t pass line is a lot less common than betting on the pass line. Making such a bet is called wrong betting, because they’re betting against the rest of the table. Players who bet on the don’t pass line are called wrong bettors (as opposed to right bettors).
Betting right:
- Betting on the don’t pass line.