Just an FYI, you can't become straight-edge since a certain time... Unless you were born on May of 2009
If you've ever done a drug, smoked a cigarette, etc. you can't become straight edge after that.
I myself am not straight edge, nor do I understand the reason for the whole subculture, I just thought I'd let you know, since it seems like you have sXe or XXX or IM STRAIGHT EDGE, written everywhere.