That was before I became an alcoholic, so there was a significant caffeine intake.
Actually, that caffeine saved the life of a really stupid kid. It was a science fiction convention, and a lot of people wear 'hall costumes' and maintain particular personas for the weekend.
The elevators were busy, so I took the stairs down to where I wanted to go. So I went trotting down, with a spring in my step as we young lads are prone to do. Then I turned the corner in the middle of the stairwell and found myself staring down the muzzle of a Baretta in the hands of a 15-year-old kid. My .44 was out of the shoulder holster (but still under my sweater) before I realized that it was a plastic replica. If not for the sensory boost of the coffee, that kid would be dead.