Possessed Toilet

I suppose that now I've gotten the initial intro out of the way, I can share a more intimate story. On a recent morning, I woke up to the dulcet tones of my shrieky mega-decibel alarm clock. I lay back, stretched, and listened to the morning sounds…the birds chirping, the garbage truck rumbling by, the humidifier in our bedroom…no wait, that's louder than the humidifier. That's actually the sound of running water. A lot of it. Awesome... I leapt from my bed, prepared to discover the source of the sound. But then I panicked; what if a crazed killer-hobo had broken into our apartment, and was currently taking a bath? (Note: I really thought this.) So, I did the only logical thing. Woke up J, grabbed a pen (um...to defend ourselves? or something? I dont know, it was early...) , and together, we made our way into the hallway. Nancy Drew and Hardy Boy #1 cleverly deduced that the sound was coming from the bathroom (just as I'd suspected!Killer-hobo bath!); specifically, we noticed that it was coming from the toilet…Which was flushing as if someone was holding down the flusher/handle (technical term)...but no one was in there (which, I guess, in retrospect, was a good thing). The toilet was roaring, just wildly flushing as if there was no tomorrow. AND IT WOULDN'T STOP. It just kept on going. And going. It was, in effect, a possessed toilet. We called the super at 7, who apparently recoiled in horror, and said that he'd never seen anything like that in all his years of, um, super-ing, and the only thing he could think of to do was to turn off the water to the entire building. So, I'm sure there were many happy people in my building that morning. We've since moved (unrelated to this incident), but I'm still puzzled by the mystery of the possessed toilet...