flog a dead horse

The headlines — “Where you once belonged vs. here and now” and, on the continuation of Richards’s Critic’s Notebook, “Dig a pony, but don’t flog a dead horse” — were bad enough and made me gently weep, to say the least.

“We had to walk that fine line of reintroducing the characters to people, especially youngsters, who might not be familiar with them and then not flog a dead horse with trying to over-explain ‘This is who Fester is.

Americans really love to flog a dead horse when it comes to sitcoms don't they?

In any sphere of business, you'll get nowhere fast if you get caught out trying to flog a dead horse.

Rather than flog a dead horse in Geneva, it is time to make progress in places where trade negotiators have momentum and politicians have interest.