A YOB is a worldwide laughing stock after film of him being decked became an internet hit. He is seen hurling abuse at a man on his doorstep and trying to goad him into a fight - unaware his "victim" is a martial artist. Amazingly, the man remains calm - until the yob kicks over a dustbin. He then floors the attacker with a lighting-fast jab, then stands over him in a fighting pose. But the gob-smacked yob's had enough and flees in Merseyside. More than 30,000 people have viewed the mobile footage on website YouTube. One fan wrote: "Absolute restraint and one swift blow = one sad little chav." Do you know the yob? Contact our newsdesk on 020 7782 4104