It started to rain so I pulled over to button up my jacket. My father up ahead realized I wasn't behind him so he pulled over. As I sped up to catch up with him I suddenly saw him off to the side and hit the brakes too hard. locked up both wheels, slid off the highway. When the tires hit the dirt, they suddenly grabbed and both me and the bike did a 360 roll right in front of my father. I walked away from it and my bike was OK. My dad wasn't though. I was 16 I think.