1. The luckiest motherfucker in history. A terrible poker player who inexplicably won the 2004 World Series of Poker. This ended up breaking the poker field wide open and introduced a new kind of fish, for which the poker world is eternally grateful.
2. Any terrible poker player who gets extraordinarily lucky.
Calling all-in on the turn with nothing but a flush draw? Who are you, Chris Moneymaker?