распространенная шутка

the joke that everybody’s telling/that’s going around at the moment

not necessarily ATM, I think
"the going joke among West Coast woodspeople—a joke that has been funny for several centuries—is to offhandedly mispronounce chittam as shit 'em"

The joke that everybody is now telling among the West Coast Woods people, which is in fact a joke that has been around for several centuries,…

It’s going around at the moment, but it’s actually an old joke

So how do you say this in Russian?

Thank you)))