“If you’re going to tell people the truth, be funny or they’ll kill you.”
Help us to complete the source, original and additional information
Billy Wilder 23
American filmmaker 1906–2002Related quotes

“If you're going to tell people the truth, you better make them laugh; otherwise they'll kill you.”
Credited to Shaw in the lead in to the mockumentary C.S.A.: The Confederate States of America (2004) and other recent works, but this or slight variants of it are also sometimes attributed to W. C. Fields, Charlie Chaplin, and Oscar Wilde. It might possibly be derived from Shaw's statement in John Bull's Other Island (1907): "My way of joking is to tell the truth. It's the funniest joke in the world."
Another possibility is that it is derived from Shaw's characteristic of Mark Twain: "He has to put things in such a way as to make people who would otherwise hang him believe he is joking."
Variants:
If you are going to tell people the truth, you'd better make them laugh. Otherwise, they'll kill you.
If you're going to tell people the truth, you'd better make them laugh. Otherwise, they'll kill you.
Disputed

2010s, 2015, Presidential Bid Announcement (June 16, 2015)

On compromise with New Zealand First and the Green Party.
Interview with Lisa Owen at Newshub Nation, 21 October 2017

New York Magazine http://nymag.com/arts/theater/profiles/63419/ (2010-01-31)
2010–present

“If you are silent about your pain, they’ll kill you and say you enjoyed it.”
Source: The Mortal Word (2018), Chapter 20 (p. 294)