How do you play that one little game with your hands and a partner?

the game i saw some people play where you clap, then point your index fingers out meaning your shooting. then clap and stick your thumbs back meaning reloading, then clap and cross your arms meaning guarding form the shots? i really dont how a better way to explain it and if you know the name of the game it would... show more the game i saw some people play where you clap, then point your index fingers out meaning your shooting. then clap and stick your thumbs back meaning reloading, then clap and cross your arms meaning guarding form the shots? i really dont how a better way to explain it and if you know the name of the game it would be great
Update: no its not rock paper scissors
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