My mom told me today that her dimmer for the lights in her bathroom makes the lights go to the maximum intensity and back down to the minimum intensity all alone when she takes a bath. It does that continuously from Maximum to Minimum, but only when she takes a bath. At first this scared her, but then she noticed that this just happened when it reached 100% humidity in the bathroom and the mirrors were getting wet because of the high humidity.
Her dimmer is one that reacts to your touch. You just put your finger on the metalic plate, and it goes either up or down, or turns off if you tap it.
Sometimes, certain things can be explained. At first you might think its out of the ordinary, and then you reason it out.
But sometimes, like in your case Buttlight, it may not be easy to explain....