グーパー

noun

rock-paper (game); variation of rock-paper-scissors for dividing people into two groups

A hand game derived from rock-paper-scissors, used to split a group into two teams. Players simultaneously show either a fist (グー, rock) or an open hand (パー, paper), and the resulting mix determines the division. Related to ジャンケンポン sense 2.

See also: ジャンケンポン

• チーム分わけはグーパーで決きめよう。

  Let's decide the teams with rock-paper.

• グーパーでグーを出だした人ひとはこっちのグループね。

  Those who showed rock in rock-paper, you're in this group.