I think we should define Chav. Do you mean "Child" as in Romany
The Times
"The words chav, chavo and chavvy have been used by labourers in the southeast of England since the 19th century. There is considerable evidence that chav derives from the Romany word for boy, chavo. Chavo is also the origin of the Spanish word for youngster, chaval. John Sampsons "The Dialect of the Gypsies of Wales" lists it under cavo, a son or boy, and relates it to the Sanskrit equivalent, sava
No you don't, however like "pikey" this usage although popularist has some racial overtones.
The Guardian
http://www.guardian.co.uk/print/0,3858,5042297-103690,00.html
Me
Unfortunately the British press has corrupted the word and used it to mock a specific group of individuals. It calls the "Chavs" a group of non-educated delinquents and the burgeoning peasant underclass. This upsurge of popular distaste towards one group may be evidence for a cultural shift back towards a class-ridden British societyat least the fear that it might be so is causing some alarm in liberal circles. However it is the very young who are propagating and creating this effect. Much of the attention is due to the experience of a Web site, which was intended to be humorous but which was infiltrated by extremists who threatened to turn it into a hate site - Chavscum. Of course many teens also did not realise it was intended to be humorous.