teach your grandmother to suck eggs
成語所屬單字grandmother
teach your grandmother to suck eggs — 慣用語
1. to give advice to someone who already has a lot more experience than you in a pa
1.慣用語
釋義
在行家面前班門弄斧；教專家做事
to give advice to someone who already has a lot more experience than you in a particular area, and probably knows more than you do.
例句
When the trainee tried to tell the head chef how to season the stew, the chef laughed and said, "Don't teach your grandmother to suck eggs."