Do not try to teach grandma how to suck eggs.
teach grandma how to suck eggs
idiomTo tell an expert how to do things.
Origin
First attested circa 18th century, from Spanish: see quotation.
The intern tried to explain the software to the lead engineer, who felt like he was teaching grandma how to suck eggs.
Given her thirty years of experience in the field, the consultant found it quite patronizing when the junior manager attempted to teach grandma how to suck eggs.
- 01
eggs in moonshine
A fanciful notion; an unrealistic or ludicrous concept.
- 02
kill the goose that lays the golden eggs
To seek short-term gain at the sacrifice of long-term profit.
- 03
lay eggs
To produce a string of failures or flops.
- 04
price of eggs
Something that is relevant or important, usually used to emphasize that another, compared thing is irrelevant, unimportant, or non sequitur.
- 05
put all one's eggs in one basket
To rely on a single source (as of income), rather than diversifying.
- 06
suck a big one
To be terrible; to be of a very low standard.
- 07
suck a lemon
To be in a sour or negative mood.
- 08
suck and blow
To perform two incompatible actions; to hold views which are in contradiction.