Trivia.com
the US Navy never considers a submarine lost if it doesn't return. It's considered to be "still on patrol".
Dad Joke.com
What do you call a monkey at the North Pole?Lost
Meme.com

Definition.com
Getting lost is important — In order to understand, one has to get completely lost in the thicket.
Trivia.com
Pigeons have been trained by the U.S. Coast Guard to spot people lost at sea.
Definition.com
Getting lost is a good thing — lost pioneers were the ones who found the best valleys.
One-Liner.com
If somebody vanished without a trace, how do people know they are missing?