Indian Poker or Indian Sweat is a gambling game, like poker. But, in Indian Sweat, the stakes are much loftier, since players bet beer, not money.
Each player is dealt one card, face down. Players are not allowed to look at their cards. Instead, they must bring the card to their foreheads without looking at the card’s face. Thus, a player can see everyone’s card but his own.
Bidding commences. The dealer begins, and the rest of the players take turns betting any number of shots of beer that the card on their own foreheads is the highest in the group.
As the “pot” increases, the players who feel their cards might be losers drop out. They must then drink the amount of beer in the ‘‘pot.’’ At the end of the betting, the player with the lowest card must drink the final amount bid.
Source: The Complete Book of Beer Drinking Games