rita_irvine said:
...He picked up a sheet and kind of jiggled it and tugged on it, then said " I wonder what this one does?"...
For many years I gave glider rides and aerobatic rides and would always try to talk to my guests before the flights to explain what was going to happen. Sometimes, if the vibes were right, I'd strap into my seat after the passenger or passengers were in the plane and then as part of my pre-flight open and shake the dive brakes / spoilers and mumble to myself "What does THIS thing do?". It usually worked well, but one time I had 2 guests release their harnesses in absolute terror and panic and jump out of the plane. They absolutely refused to get back in and we had to change pilots for that ride; since then I didn't play that joke all that much anymore...