百ひゃく面めん相そう

noun

making many different faces; comic face-changing act

Refers to a performance or playful act of quickly changing facial expressions, often using small props like glasses, hats, or drawn-on features. Common in comedy, children's play, and variety shows.

• 彼かれは宴えん会かいで百ひゃく面めん相そうをやってみんなを笑わらわせた。