also: じゃんまけ
noun
losing at rock-paper-scissors to decide who does a task
Used when the loser of a janken (rock-paper-scissors) match is assigned an undesirable task. Common in casual group settings.
See also: じゃんけん
ジャン負けした人が買い出しに行くことになった。
The person who lost at rock-paper-scissors ended up going on the snack run.
Compound of ジャン (from じゃんけん, rock-paper-scissors) and 負け (losing).