is a way of life free from drugs, alcohol, and promiscuous sex. It originated in the original hardcore
and punk scene. When bands would play at all ages venues, minors were required to have X's put on the top of there hands, signifying that they were underage. When one band member, Ian Mackaye
from the band Minor Threat
, decided he was going to where the X's on his hands even though he wasn't underage but still free from drugs and alcohol, he built a community of people that were drug free. Straight edge
eventually evolved into keeping yourself clean, and not harming your body.