This is a card game based on the higher/lower system.
The dealer flips one card over and the first player guesses if the next card will be higher or lower. If they are correct they keep guessing until they are able to get four in a row correct. Once this happens they are able (if they choose) to pass and the next player has to keep playing on the string of cards that have been played. Once someone makes an incorrect guess they have to drink one sip for each card in the current string.
The fun in this game is when to decide to pass your play to the next person. Once you get four in a row right you can pass play but you can press your luck and try to extend the string longer to fuck over the next player in line before you pass.