Coolest ATC - St. Petersburg Florida. I had just flown along the beach, sightseeing with a passenger in a rented 172. Returning to Albert Whitted airfield, ATC asked me to orbit for spacing, an experimental aircraft was ahead of me for Runway 36.
Replied I, in astonishment, looking at the peculiar objects in front "There's two of them!" "That's affirmative, and they're pretty slow" ATC confirmed.
So I did a fairly ample orbit for spacing, and when I was lined up again for 36, they had completely vanished! I looked around and to my astonishment, there were the two experimental aircraft on my right, making an approach to runway 27!
Said I to ATC...."have you changed the runway or something?"
ATC to me "We wondered when you would notice....."