I came up with some thing new, Dubs roulette.
1. A user challenges another, could be someone they hate or just a random person.
2. Tell them they're challenging them to Dubs roulette and tell them the stake (FJ points, items, delete account)
3. Take rolls in turns until some one gets dubs.
4. The winner is the first person to get dubs, the loser must do whatever the stake was.
5. If the loser can roll dubs after the winner does you carry on, if not you lose.
6. Sit back and enjoy victory or kill yourself over losing.