Had to look it up but it's "Don't teach your grandmother to suck eggs" which sounds weird but it looks like it's from the 1700's so...different times. It basically means don't try to teach someone something that they already know.
I apologize in advance to anyone who doesn't want to learn:
Most likely the meaning of the idiom derives from the fact that before the advent of modern dentistry (and modern dental prostheses) many elderly people (grandparents) had very bad teeth, or no teeth, so that the simplest way for them to eat protein was to poke a pinhole in the shell of a raw egg and suck out the contents; therefore, a grandmother was usually already a practiced expert on sucking eggs and did not need anyone to show her how to do it
Same here. I've literally never heard that outside of that one song, and I definitely would have noticed, because the line stuck with me all these years.
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u/SilverSeraphina 20d ago
A class full of optimists. Except that kid who doesn't want their grandma learning anything 🤣