My Odometer Must Be One Zero Short of a Thousand

A strange thing happened while biking on the Capital Crescent Trail the other day. I was riding upright, with no hands on my handlebars. I do that a lot, because I find it more comfortable than the hands-on position. Sometimes I keep my arms and hands tucked in close to my body, resting my hands on my thighs, both for variety and to be more aerodynamic. In this position, as I passed by a couple of women walkers, it occured to me that, both coming and going, I might look like I have no arms. It's the kind of thought one has when one gets into the rhythm of the ride and the mind begins to drift. That, and songs like "Hotel California" that keep repeating in my head.

Not 2 minutes later, I saw a biker approaching me from a distance. He had one hand on the handlebar. I didn't see his other hand or arm. I figured, he's doing the one-handed tuck, I need to try that some time. Then he got closer. I saw that, in fact, he had only one arm. How often does one see a one-armed biker? How often does one see a one-armed biker less than two minutes after thinking about bikers with no arms?