“As I was laying it down, all of a sudden I heard it go ‘thunk!’ as it came loose,” he said. “I thought, well, that’s not a real problem. You know it’s still going to go off. And it did.”
He couldn’t pull it back up, but figured, “Maybe, three-four months it’ll run out of battery. That was in September of 2004. It is still going off every day. And during daylight savings time it goes off at ten minutes ’til eight. And during standard time it goes off at ten minutes to seven at night.” More at Neatorama.
Not sure I could have held out for more than a decade.