How many optometrists does it take to change a light bulb? 1 or 2? 1... or 2?
Press and hold the button for a long as you can endure. You might even get on the leaderboard!
Just like word magnets you might find on a fridge, but online!
The longer you wait to reset the sign to zero, the higher your score. But don't wait too long, or someone else might reset it!
Don't hit the walls, or you'll sink!