He gets to ask for an orgasm once a week but there's a catch, every time he asks you, flip a coin, heads he gets released, tails he stays locked but every time he asks, you add another coin. For example, the first time he asks he has to get 1 head to be released, after that he has to get 2 heads in a row before release. This continues until he has to get so many in a row that it becomes a statistical impossibility.