Here in the mainland US, we call it Rock, Paper, scissors. In Hawaii, it's called Jan Ken Po. In Japan, it's called janken. I've also heard it called roshambo. Either way, it's the classic way to determine who goes first, who has to pay the check, or settle some dispute.

Leave it to the Japanese to come up with a way to play janken by yourself-with a robot. The picture shows a man playing the classic game with a robot. Who wins? The human, of course: rock beats scissors.

Yahoo/Reuters via TOKYOMANGO