小こ鼻ばなを膨ふくらます

expression, godan verb (-su)

look displeased; flare one's nostrils

Idiomatic expression describing a facial expression of displeasure or sulkiness, literally 'to puff out the sides of one's nose'. Often used when someone is sulking or showing annoyance.

• 彼かれは注ちゅう意いされて小こ鼻ばなを膨ふくらませた。

  He flared his nostrils in displeasure when he was scolded.

• 妹いもうとはおもちゃを取とられて小こ鼻ばなを膨ふくらましている。

  My little sister is sulking with her nostrils flared after her toy was taken away.