Best time was after I'd gotten used to riding clipless and put regular pedals back on so I could go somewhere with hiking boots on. First red light I came to I tried to twist my heel out, but those boots had such great traction on the pedal that I couldn't. I was slowly falling over sideways while frantically trying to twist my foot hard enough when I realized what was going on and simply lifted my foot off the pedal.

I would have hated to be the first guy in history to turtle using flat pedals, and it was damn close to happening.