Refers to a player who plays too many hands and calls too many bets. As a result they are continuously losing their money and constantly putting money in the pot.
SoundPoker Says: ATM's tend to play too loose and make many poor betting decisions, a
money losing combination. Many skilled players refer to weaker players
as an "ATM" because the weaker players are very easy to get cash from.
See Also: Aquarium, Bleed, Call, Calling Station, Fish, Loose, Throwing A Party