1. The British equivalent of the United State's "Wiggers," "Guidos (although these are by definition always of Italian descent-and I do mean descent)," or "total idiots."
While there are certain genuine sorts who talk the talk AND walk the walk (usually raised in actual rough neighborhoods), the American "chav" is almost alwaysfrom an affluentsuburb and descends from lilly-white, non-divorced, WASP parentage. The former is instantly recognizable by the "thousand mile stare" or "serial killer shark eyes" that they have. The latter is always recognizable by the "Chip n' Dales" malestripper air freshener that is hanging in their Mom's BMW (which they are trying to pretend is their own, and always refer to as "the Beamer").
A pound of marijuana (or kilo of cocaine or heroin) that is compacted into a cube, thus resembling a brick. This is a process that is usually done for the purpose of shipping and/orsmuggling the substance.