Straight Edge

Originated from the punkrock/hardcore scene. The philosophy/life-choice that humans should have strength, pride, dignity, honor, and self respect; that they shouldn't engage in activities that are a disgrace to their minds and bodies. (such as ingesting and/or becoming addicted to harmful substances for fun, lying and/or being two-faced, and sharing your body sexually with another person when there isn't even a true emotional bond there)