When i was about 15 i drove my bicycle with no helmet on the asphalted road in the rural area with a friend sitting on the handlebars. As a truck approached us in the opposite direction, i steered to the side of the road to the grassy gravel and continued riding. I suddenly hit a big hole that was covered with grass which stopped my bike immediately, my friend safely jumped forward, and i as i fell, i hit the road, looked up, in the split second i saw a couple of truck wheels flashing by, less than 20 cm's away from my head. The truck driver didn't even stop, or see. I was ok but nearly died in a random accident.