Man, when I was about eleven I was riding to school and pulled a wheelie. I was pretty good at riding down the street with a wheelie, but the backpack put me down and I landed on my tailbone. I lay in the middle of the street screaming for help, sure my back was broken. I was scared and was going to the hospital. I screamed for help, but nobody came.
Eventually the pain subsided, I got back on my bike, and rode with shame to school.