I can change a rear tire and fix a flat. I think I learned a lot this stuff, like finding the hole in a flat tire and putting it on or oiling or cleaning things, from my grandpa when I was 3 or 4. My family still laughs about how I always wanted to "operate" my scooter and my first bike when I was small.

Still, I always have to find out how to put the chain in the right spot again if I have to change it or the tire or the jockey wheels, it's a bit confusing.