The immediate period after Townie pubs and clubs kick out at the Weekend when hundreds of chavs fall out of the establishment to fight, copulate and inbreed.
Police officer 1: Well Lenny I think we're going to have a right chavalanche on our hands tonight when Evolution kicks out!
Police officer 2: Lets hope so Dave I cant wait to take out a few of those grubby little Pikey Fuckers.
chavalanche
Chav-a-lanche
asin an avalanche of Chavs
AKA when all the chavs (otherwise known as scum) come swarming out of the trees and dark corners when a fight kiks off, carrying their little knifes which retract inwards when they attempt to stab someone but fail becuse they arnt strong enugh to lift the knife. they then usualy run away to carry on with their Insest.
A group of chavs. (otherwise known as pikeys, townies, scums of the earth etc.) Often a group that is following a regular person, nerd, emo or even lesser chav in order to inflict physical pain upon that person.
Can also be used when walking towards a group of chavs.