George Bernard Shaw: Last Laugh
"Nancy Astor sat with George Bernard Shaw at his death-bed. The old boy woke up suddenly from a coma and said, 'Nancy, did you ever hear the story of Adela Patti's husband?' It appears that the prima donna and her (foreign) husband arranged a country-house party after what they supposed would be the English fashion. The guests were assembled, the music struck up, when the husband appeared running down the staircase. 'You must all go away. I have found a man in bed with my wife.'
"Consternated, the guests hardly knew what to do and were preparing to leave when the husband appeared again: 'You must all come back. It is quite all right. He has apologized.'"
[These proved to be Shaw's last words.]
[Trivia: Shaw's epitaph? "I knew if I stayed around long enough, something like this would happen."]
I bow in homage to your encyclopedic mind.