An immature Japanese idiom for you

Japanese people have a lot of idioms - some are very similar to English ones or have roots in different cultures.

Can you guess this Japanese idiom?

いつまでも、親の (    ) をかじるのはよくない。仕事を探そう！

Continuing to cling to your parents' apron strings indefinitely is not good. I will look for a job.

◆ Vocabulary Hints

親（おや）　parent
仕事（しごと）　job
探（さが）す look for

Choose the correct word to fit into the missing space ( 　　　).

Select the answer from choices 1～ 4 below.

① すね
② 首（くび）
③ 足（あし）
④ ひじ

答えは・・・The answer is・・・

①　すね

◆ Today's expression

親のすねをかじる - To cling to one's parents' apron strings

◆ Example sentence：

A: 最近、兄弟が大学を卒業したんだけど、まだ親のすねをかじってるよ。
B: そろそろ自立しなきゃいけないね。自分の人生を歩むためにも、仕事を見つけるべきだよ。

A: My sibling graduated from college recently, but they're still clinging to our parents.
B: They should start becoming independent soon. They need to find a job to pursue their own life.