It means don't keep drilling in your point when it is already understood. Such as not reminding people about something constantly.
The LITERAL meaning is of a beat (whatever animal that may be) that has died.
This is a horse term. Flogging is beating with a whip. It does no good to beat a horse that is dead, because it will never get back up and work for you.
beat the story mode
It's a useless action. (A dead horse won't pull your wagon no matter how much you beat him.)
"To flog a dead horse" is the English equivalent to "to beat a dead horse", which means to do something over and over again when it is not necessary, whether it be saying something or doing something.
It means that you should stop talking about the subject because it's useless and already been talked about enough. (A dead horse won't do anything for you, no matter how many times you beat it.)
It's a geometry term and a play on words. A cliche parrot name is "Polly", as in "Polly, want a cracker?" or like the cliche, Fido, name for a dog, or the cliche company name "Acme". Polly (parrot) gon (gone=dead)
The first known uses of this were actually worded "flogging a dead horse". The English politician John Bright used the phrase in 1859 in the House of Commons, and later in 1872 in reference to raising an issue in which Parliament seemed uninterested.
- My efforts are futile - Pissing in the wind (Australian slang) etc. bark at the moon catch at shadows bite a file beat the air in vain plough the air etc.
"shooting a dead horse"means that you are repeatedly doing or saying something that is pointless because of the fact that the said "problem" you keep addressing has already been resolved. this is comparable to shooting a dead horse because if the horse is already dead, shooting it again isn't going to make it any more dead. Plus that would be a tremendous waste of bullets...
Charley horse (or Charlie horse). Also variously called a corked thigh, dead leg, granddaddy, chopper or Tommy horse.
The ending of the book was just one huge, overused cliché.The editor did not like the cliché in the author's book and suggested that it is changed.