The Jacoby Rule
"Gammons and backgammons do not count, if the doubling cube hasn't been turned [no matter who hasn't turned]."
This rule is not used in tournament play, but can be applied in money games.
http://www.google.com/search?q=jacoby+rule&hl=da&lr=
| reasoning: | the rule is meant to shake up the poor doublers out there ...I know I'm rattled! |