chavalanche - when your local pub/venue/shop is invaded by the burberry cap/hoop earing/pramface/croydon facelift fraternity.
chavi is romany for boy. although it could be attributed to chatham, where all these people obviously originate. charver is also romany for prostitute.
who knows?
__________________
burn down our home, RAPE OUR DEAD MOUTHS. Just as long as I don't have to hear anymore of your disgusting babble