Similar to others, but this actually happened to me...
I grew up in Morro Bay, CA...a small coastal tourist town. Used to fish the docks and piers weekly. One day, while in High School, my friend and I were fishing off of one of the higher piers when a kid about 12 y.o. walked up and asked, "Are you fishing?"....
I replied that we were trying out for the olympic swim team, and that my partner was on the other end of the line...and I think he almost believed it.
"Trust, but verify" - Russian Proverb, as used by Ronald Reagan