I actually grabbed the camera from her a couple of time to shoot something and I immediately tilted the camera forward to chimp before I remembered it was film not film.
Priceless. I once was asked to quickly come to a neighbour to shoot his kid's birhday party. Since I was working on something else, I absentmindedly picked a body from the body closet, a lens from the lens closet and joined the party. The balance didn't feel right but I was still absorbed in my thoughts. I actually took a shot and that's only when I heard the noise that I thought "something's wrong with the camera". My mind went blank for 30 seconds before I came to grip with the situation.