Not literally, but it happened all the same. My colleague needed the copy machine this morning at the exact time I was using it. Although I finished the stuff I needed for the day, I pulled some extra materials from my bag and kept on copying, made her wait an extra five minutes. And then, she jammed the machine. Although I knew what the problem was, I watched her sweat it out for another few minutes before explaining what to do. This was fun. I intend to let it happen again.