Last week, I jumped on the bike to make a run to the grocery store. I wore my fairly new work tennis shoes, kind of a hiking tenny, and as I put the kickstand down, the ball at the end stuck perfectly into the heel of the shoe tread,(like a ball and socket) like it was made for it. I didn't have the stand quite all the way down yet and it rudely jerked me for a minute. Strange and discomforting.