When we were playing guess-the-animal game, we took turns drawing an animal and the other person would guess what the animal is. We drew elephants, tigers, and alligators.
But then we started to run out of obvious animals to draw and had to reach for more obscure animals. When it was your turn to draw, you asked me how many legs a scorpion has. I said eight legs. You then showed me a drawing of an animal with 16 legs.
I said, "A scorpion!"
You said, "How did you know?"
I said, "Just a guess."