판을 깨요 · 판을 깼어요 · 판을 깨지 마세요
to break up the game; to wreck a deal or gathering
Example
협상이 잘되고 있었는데 그가 판을 깼어요.
The negotiations were going well, but he wrecked the whole thing.
Word parts
판 = a game, scene, or setup; literally 'to break up the board.'