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

https://rock-paper-scissors-k-l-i-e6-159.keystonescope.com/posts/20-tips-to-help-you-be-better-at-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 methods to puzzle them?