When someone calls bullshit, the cards are turned over and someone has to drink depending on what the cards are. Each person has to verbally say what they are playing each turn (ex: 'Two Aces,' or 'Three twos'), and any of the other players can call bullshit if they think that person is lying. You have to put at least one card down when it's your turn, so if you have zero Aces, you have to lie.
If they only have one Ace but want to get rid of more cards, they can lie and say they have two or more Aces. Each person is dealt a stack of cards, and the person to the left of the dealer starts the game by placing all of their Aces face down in the middle of the circle.
The objective is still to get rid of your cards by lying. This game is basically the same as the card game, but with a little twist.