About 10 years ago I was riding in grass that was somewhat tall....It wasn't THAT tall, but it was enough to cover a storm drain that wasn't covered, fenced, or marked. I fell about 2 feet, went over the handlebars, hit my head on the ground, and landed on my back...the bike was still ridable (although scratched) so I started back for home in a lot of pain.

Well stupid me and my shortcuts off of the path....just a small ditch that I didn't see in time caused me to go over the handlebars again...