Child rearing/Children - Idioms

Child's play 소꼽놀이 

-Finishing a job should be child's play for someone with his skills.

New kid on the block (old expression): New face,New to a job, New face.

-I'm just the new kid on the block. I've only been working here for a month.

Like a kid in a candy store: very happy and excited in the place

-You should have seen him when he arrived. He was like a kid in a candy store.

Mama's boy 마마보이

-He's such a mama's boy.He relies on his mother.

Throw the baby out with the bath 

원치않는것을 버리려다 중유한것 까지 잃다. (아기목욕물과 함께 아기버리다)

Boys will be boys: Excuse for men's stupid mistakes

-You can't blame David for breaking the window with his baseball. Boys will be boys.

-My husband can't resist driving 80 miles per hour in his new sports car. Boys will be boys.