Straight edge emerged as a subculture and subgenre of hardcore punk in the 80s. Broadly speaking, being straight edge folks refrain from using alcohol, tobacco, and other recreational/non-prescribed drugs (marijuana, LSD, cocaine, heroin, etc.). It also spawned the much aped cliche of the insufferable know-it-all who's always going on about their politics and generally being a dick.
But what we really want to know is how straight you are, really? Let us know how you get on in the comments!