I get the same from chavs in Doncaster all i say is if you can get me up on top of a big shop roof and i will do a drop flip or i give them some bull about beign able to do triple backflip 360's lol. If they ask me to proove it i tell them to watch t.v and they will eventually see me lol some say no but others go and never bother me again. Best thing to do is just tell them you can do something stupidly big and that you need not proove it to some chav. Adam.