Rock-paper-scissors — the hand game using rock (fist), scissors, and paper to decide a winner; commonly used to make quick decisions.
じゃんけんで順番を決めよう。
Let's decide the order by rock-paper-scissors.
最初はグー、じゃんけんぽん！
Ready, rock — rock-paper-scissors!
子どもたちは公園でじゃんけんをして遊んでいた。
The children were playing rock-paper-scissors in the park.