I was going to a hill at speed and noticed my mates were a bit further ahead so I decided to try and catch up to them. I went to pedal but my feet slipped off just as I was going over where 'SLOW' was written on the road, my legs pretty much stopped moving but the top half of my body didn't. My chest slammed into the stem and then my head nutted the front wheel, I carried on over the front and rolled about 3 metres down the road and the bike ended up landing on me. This one isn't a bail as such: We were up shipley glen and it started pissing it down so we set off to the station, as we got there the train was just pulling into the station and so eveyone jumped on theirs bikes. Just as I got on, my right grip slipped straight off the bars and I just fell straight over the front and was left in a heap on the ground.