Round robin style, everyone who joins will play everyone else one time.
Each round, players will secretly lock in a submission of ‘Booty’ or ‘Yeah’
If both players submit ‘Booty’ the bootypile grows by 2 and the game continues. If one player submits ‘Booty’ and the other ‘Yeah’ the player who submitted ‘Yeah’ gets all the previously accumulated points plus one for the ‘Booty’. The other player gets nothing and the game ends.
If both players submit ‘Yeah’ they split the pot and the game ends.
The player with the highest score after everyone has played everyone wins.
And remember there is no second place. If you ain’t first you’re last.