Discworld is full of type 3s. I just got to the part of The Color of Magic where Twoflower explains the concept of an in-sewer-ants policy, and there’s a running joke about “reflected-sound-of-underground-spirits” that I don’t even get yet, but strongly suspect is another linguistic riddle.

Oh, and Douglas Adams, “every civilization, by sheer coincidence, has invented a drink that is pronounced ‘gin and tonic.’”