If you are unlucky enough to see some chav riding off on your bike, forcing you to give chase, when you catch up with him, firmly grab the back wheel around the tyre and rim, the bike will instantly stop making the chav fall off in a really spazzy way as he is not expecting it. Its suprisingly easy to do as long as your fast and firm with the wheel (practice on yer mates ) lifting the wheel a little as you grab. With the chav decked you can then proceed with jumping on his neck