As the Actress Said...

Here's something to lower the tone.
  The phrase 'As the actress said to the bishop' is still just about extant (on this side of the pond), employed to draw attention to a double entendre. A slightly naff expression, it was a favourite of Ricky Gervais's David Brent in The Office. But where did it originate? I hear you ask wearily. Well, it has an origin story, which may or may not be true, but it certainly made me laugh, so I pass it on...
  It seems the actress, socialite and alleged royal mistress Lillie Langtry was a guest at a country house party, where one of her fellow guests was a bishop. While they were strolling together in the rose garden, the bishop had the misfortune to prick his thumb. Later that day, at dinner Miss Langtry inquired of the bishop, 'How is you prick?' 'Throbbing,' he replied, causing the butler to drop a tureen of potatoes. 

[This reminded me of Arthur Marshall's account of Clemence Dane's unfortunate turns of phrase.]