When you are walking down the road or entering and leaving the local shops premises and are randomly verbally abused or physically attacked by a group, consisting of a number of chavs and / or chavettes, for no other reason than their ignorance, lack of intelligence and education.

Be aware that they are pack animals and therefore will only attack in groups as a chav is a complete wus when on their own.
Although chavs believe that demonstrating this behaviour in front of other chavs gains them street cred, in reality it only gives these vermin ASBOstatus.

Invented in Borat's movie. It is said, when something great happens.