Lost and Found

I know it's been a while, I haven't been doing a lot of fun photography for the last little bit but I got this shot on a bike ride with the Cooley's and Jeremiah last week that I thought was kinda cool. Someone had tied this shoe to the fence near our house, maybe so the owner would see it more easily?

I always wonder how this happens.  

Wouldn't you notice you only had one shoe left?