My husband plays this trivia game on his phone that involves splitting the prize with all the winners (at the end of the series of questions) at the end of the live game... I know just to walk away when I hear the music, because if I mumble a word, shift in my chair (causing a squeak), breath the wrong way, fart by accident, flinch etc.. any of it can be blamed on his loss.
Usually for the reason you said, Kirk... he changed his answer to the question at the last minute