yes

“Did you happen to rummage through someone else’s phone?”

You definitely want to deny it right away, or preferably not say anything at all. However, you must answer and you must use neither “yes” nor “no”. You use these two inconspicuous words more often than you think, but in this game you face punishment for it! Your opponent, using precisely constructed questions for this purpose, will trick you into saying one of them. Keep calm to get more cards. The player who gets the most cards by the end of the game wins.