Here's the story that I've heard about him:
Calvin Coolidge, a president of few words, was so famous for saying so little that a White House dinner guest made a bet that she could get the president to say more than two words. She told the president of her wager. His reply: "You lose."
quoted from https://clintonwhitehouse4.archives.gov/textonly/WH/glimpse/presidents/html/cc30.html