親おやのすねをかじる

expression, godan verb (-ru)

live off one's parents; depend on one's parents financially

Idiomatic expression; literally 'gnaw at one's parents' shins'. Used for adults who rely on their parents for financial support, often with a negative or self-deprecating connotation.

• 彼かれは三さん十じゅっ歳さいになっても親おやのすねをかじっている。

  He's still living off his parents even though he's thirty.

• いつまでも親おやのすねをかじっているわけにはいかない。

  I can't keep depending on my parents forever.