everything you have in a poker
game. Allows a player with less money than another player to complete a hand he would not have had enough money to participate in the bet
rounds with. Limits your potential upside
for the game though.
This causes most of the famous scenes in the World Series of Poker
where one player moves his enormous stack of chips
into the pot saying "I go all in
", the other player does likewise with his chips and says "I call
, what ya got?".