I once set off the fire alarm at work. It was a Saturday, fine fall weather and I had sparked up a good cigar on the drive in. Of course I extinguished the cigar before I entered the building but it was sitting there on my desk, just begging to be enjoyed. I then recalled a fellow employee who use to light up at work on weekends. Knowing I was the only one on my floor, I figured I could light up without bothering anyone. Well, wouldn't you know it, the fire alarm went off about 5 minutes into the cigar. The realization then hit me...we had recently moved into the new building and of course it had the latest smoke detector system. I quickly called security who confirmed the alarm was from my area. I informed them there was no fire but a case of misadventure. I then decided the work could wait until Monday, and sheepishly left the building, lesson learned.