teach your grandmother to suck eggs การใช้

• But the relationship wasn't always easy : After one particularly harsh command from Lean, Young looked at him coolly and said, " Don't teach your grandmother to suck eggs ."
• The saying is Teach your grandmother to suck eggs ! _ at least, that genial rebuke is the form in which I've most often seen it _ and its central metaphor is fading fast as chicken coops disappear from the landscape.