Further to Will's jokes..
Q) What do a chav and a Slinky have in common?
A) They're both useless but it's funny to watch them fall down stairs.
Q) What's the difference between a chav and a coconut?
A) One's thick and hairy, the other's a coconut.
Q) What do you call a chavette (woman chav) in a white tracksuit?
A) The bride.
Q) If you see a chav on a bike, why should you try not to run him over?
A) It might be your bike.
Q) Chavs in a car without music. Who's driving?
A) The police.
Q) What do you call a chav in a tastefully decorated house?
A) The burgular.
