teach grandma how to suck eggs

== English == === Alternative forms === teach Grandma how to suck eggs; teach grandma to suck eggs, teach Grandma to suck eggs (proverbial forms): don't teach your grandma to suck eggs, don't teach your grandmother how to suck eggs, don't teach your grandmother to suck eggs This may appear similar to the following phrases, but they mean almost the opposite: don't teach your grandmother how to milk ducks don't teach your grandmother to steal sheep === Etymology === First attested circa 18th century, from Spanish: see quotation. === Pronunciation === === Verb === teach grandma how to suck eggs (third-person singular simple present teaches grandma how to suck eggs, present participle teaching grandma how to suck eggs, simple past and past participle taught grandma how to suck eggs) (idiomatic, chiefly in the negative) To tell an expert how to do things. ==== Derived terms ==== don't try to teach grandma how to suck eggs ==== Translations ====