The driveway of our elementary school had a long driveway that went around the building and connected the parking area on one side and a paved playground on the other. At the one corner of the building it made a swooping down hill left and back up hill. There was a grass back along that side we used to jump bikes off of all the time. No problems just good clean fun. The one problem occurred at night. The light at the corner of the building only shone to the crest of the hill. I was asked to jump first ,but I was only like 8 and too afraid. My brother was about 15 and wanted to show off to the neighbor girl. When he went off the jump there was an instant piercing screaming. The front wheel had come off his bike in the air. The forks dug in and he had a broken handle bar sticking out of his thigh. Bleed like hell. We got him home and it had missed all the major arteries and had stopped bleeding. My mother refused to take him to the hospital for being "Stupid" !!!!!!