Outside poker jargon, a more general expression indicating utter, complete, and oftentimes humiliating domination. Similar to pwnd or owned
Man, I just got dic't by that physics test.
When in the game of poker, you lose the hand despite the opponent being the underdog.
When you hold AK and the opponent holds A2, the flop comes A 9 4, the turn a J, then the river a 2. This means you got dic't on the river.