Shy Guy Showdown is a Mario Party 5 mini-game.
In this mini-game, two players are pitted in a quick draw duel to see who has the fastest button press. A Shy Guy in the middle of the arena will hold a sign with a button for the players to push. The first player that pushes the right button that appears on the screen gets to shoot the ink ball at his or her opponent and is declared the winner. If he holds a fake sign, the button should not be pushed yet; the players should wait for a real sign to be held up. If the wrong button is pushed, then the player who pushed that button will get ink on himself or herself and his or her opponent wins.