police officer 1: well lenny i think we're going to have a right chavalanche on our hands tonight when evolution kicks out
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" What is the definition of "chavalanche"?