It basically means a long time has passed since the event being referred to previously occurred.
The expression comes from the 1800's, when people thought that raccoons were long-lived animals (they can live up to 15 years in captivity).
It is not an idiom, it means your nose is itching.
idiom means expression like a page in a book
Simply its mean a bully.
I think it means that that person agrees with that others persons idiom and that it fit that question that the teacher or whoever asked that question.
It's not an idiom. It's just a sentence -- to be young again means that you are once more younger in age. This can be literally -- like in a science fiction time travel story -- or it can be figurative -- like your mind is young again.
Nothing is longer than a coon's age.
The idiom "a dog's age" means a long time or a period that feels particularly long. It exaggerates the notion of time passing slowly, similar to saying "an eternity."
A very long time!
They called us coons to be mean, look in the mirror you don't look like a coon do you, I sure the hell don't.
Hannibal Hamlin died on July 4, 1891 at the age of 81.
Hannibal Coons's birth name is Stanley J. Coons.
RFP is not an idiom. It's an abbreviation.
It's not really an idiom. It means "what are you thinking about."
It is not an idiom, it means your nose is itching.
idiom means expression like a page in a book
It's not an idiom. It means the tip of your nostril.
"Sieve" is not an idiom. See the related link.