If I've piqued your curiosity about this tale, come to Story Hour next year. I'm sure Ernie can be persuaded to tell it again.
But here's a story Ernie told me that I can share with you. Did you see the two unicyclists in the parade? They were Steve Gratto and his 11-year-old son, who happened to be driving through town when they got caught in the line of cars stopped for the parade.
So what did they do? They got their unicycles out of the car and joined in. Steve even juggled while he rode. How's that for ad-libbing?