That reminds me of this one:

A woman walks into a cafe and orders a coffee...

After a minute, she stands on her table and tells the cafe the funniest joke she knows. The place is filled with silence and everyone carries on drinking.

After an hour, another woman in the cafe stands on her chair and tells the cafe the same joke and the place erupts in laughter! People are rolling around on the floor, unable to contain themselves. It is easily the best joke anyone has ever heard. Everyone thanking the woman and shaking her hand. All, except for the woman who told the first joke...

‟I do not understand”, she says to the barista, ‟that was the exact same joke I told, all she did was change the names”.

The barista shrugs and says ‟mate, you've walked into r/jokes. They love a good repost”.