Some players use Rock Paper Scissors to check timing and psychology-- do you go first, mirror moves

https://rock-paper-scissors-gambling-game-v-d-p-c9-101.raidersfanteamshop.com/why-no-one-cares-about-rps-gambling

Some players use Rock Paper Scissors to check timing and psychology-- do you go initially, mirror moves, or all of a sudden switch strategies to confuse them?