to teach one's grandmother (how) to suck eggs
to teach one's grandmother (how) to suck eggs
01
to offer unnecessary or redundant instruction or advice to someone who is already experienced or knowledgeable in that particular area
Dialect
British
British익살스러운
관용구
불쾌감을 주는
예시들
These young hotshots come in and try to prove they know the ropes better than we do, like they're teaching their grandmothers how to suck eggs.
