All these stories are coming back to me now... When I was a kid, I was in the middle of the street and cranked down hard on my BMX bike to start a sprint. I put everything I had into that first stroke... and the freewheel broke. My foot shot straight into the ground, I racked my nuts on the top tube and my chest on the handlebars. If I remember correctly, I think I just laid in the middle of the street for awhile until I was capable of limping home.