I have never seen a “MONS-TURN” in my life, but these were made in Japan in the 1960s and were meant to be placed in the rear window of your car. Then you would hook it up to your turn signals and whenever you signal left, right or stop, you monster friend in the rear window would let the people behind you know what was going on as well.
The only problem I can see with this, is that, if I placed it in the rear window, I would be constantly staring at it when I used by turn signals (which I call blinkers – does anyone else do that?) So I would probably miss the monster signal in the rear window of the car ahead of me and get into an accident which would lead to a monster-related 22 car pile-up.
Here is the monster:
Oh and the box is almost as cool as the actual product inside: