Super Mario bros 4-4 Revealing fake Bowser

Playing through 4-4 and reveals that it's just a fake Bowser, and actually an enchanted Spiny. Many players never thought of this, just thought they defeated Bowser 8 times, but in reality it was enchanted creatures instead. All you have to do is shoot the fake Bowser 4 times. Also this level is an endless loop if you don't go through the maze the right way.