To set up this drinking game, the dealer deals four playing cards to each player and then deals 25 cards face down on the table in front of him / her in a 5 x 5 square.
Starting with the row of cards furthest from the dealer, the cards are turned over one after another. If a player can match the turned over card with one in their hand, they can nominate someone to drink. The amount they can nominate depends on where the turned over card is in the grid: a card in the top row furthest from the dealer is worth one finger; one in the second row from the top is worth two fingers; and so on. In the bottom row each card is worth five fingers so if you can match one of those you can really punish your opponents!
When you’ve turned all the cards over and nominated all your fingers, just start again!