No moving parts anywhere, except the ball. Can you find the trick to reach the exit? Hint: you'll need three taps, not two.
Too many hints! The title was sufficient. Even then, I would have enjoyed it more if I figured I had to tap one final time on my own. ...And I would have figured it out on my own.
Sorry... it was because I didn't really consider it a puzzle, but more as a curious demonstration of something peculiar that then leaves you wondering (puzzling) how that works inside :*)
