PICTURE THE scene: you're stupid and you're riding with your stupid mates who are prone to flipping bikes on the public highway.
Predictably, one of them cocks up while trying to nail 12 o'clock-er and the rider gets a face full of tarmac but the bike (a Bajaj Pulsar, we think) keeps going.
Most people would slow down and wait for the bike to stop and fall over before trying to retreive it but not you, you're stupid and empowered, so you try and round up the escaped steed and get taken down in the process. Remember, you're stupid and you've got no real idea of what is likely to happen once you try and grab the bike.
No wonder it tried to make a getaway.