箸が転んでもおかしい年頃

はしがころんでもおかしいとしごろ

Also written 箸が転んでも可笑しい年頃

Meanings

  1. Expression, Noun age at which even the slightest things seem funny (esp. said of girls in their late teens) (literally: age where even chopsticks rolling is amusing)

Kanji

Jinuma: Japanese Dictionary · Word lists