Straight Edge is basically a way of life that includes no drinking, no drugs, and so casual sex. Abbreviated SxE. It is not a religion or a gang. It is a choice that someone makes. However, not everyone who doesnt drink/do drugs/have casual sex is straight edge, and not all that say they are straight edge, are straight edge. People who are SxE might put black x's on their hands. yes, you can be friends with people who do these things. There are a few types of straight edge kids.
The true SxE kid - does not drink, does not have casual sex, and does not do drugs. Also, does not go around telling everyone he meets right away that he is SxE, when the time comes to bring it up, he does tell. Does not think himself better than others becasue he does not drink or do drungs or not have sex. Does not beat people up for smoking or drinking.
Asshole SxE kid - Abides by the 3 rules of SxE, but goes around thinking he is better than everyone, puts people down for it, and basically bugs the fuck out of people.
Scene/Fashioncore SxE Kid - Wears x's on his hands all the time, and wears a bandana around his mouth and nose all the time, usually has died black hair. Most of these kids are not actually SxE, hell, most of them dont even know the true meaning or SxE but say they are to get friends/be cool/fit in. They are the SxE trend kids, and give True SxE'rs a bad name. Becasue of these kids, most kids just think being SxE is wearing black x's and bandanas around your face.
Hardliner - Super SxE kids that usually are vegan, wont take drugs even for severe pain, drink caffeine, or do anything like that. There most defining trait ,however, is the fact that they beat the living shit out of people for smoking, drinking or doing drugs. They might see someone doing one of these things, not bothing them at all, get a bunch of their friends, and beat the shit out of one person with somewhere between 2-? people. These people sometimes kill the people they attack. They are the biggest threat to true SxE people. A lot of cops and other uninformed people, becasue of hardliners, believe SxE people to be a gang, and believe ever SxE kid will beat the shit out of someone smoking or drinking or something like that. They are hated by most SxE kids.
True Straight edge kid (when asked about drinking/drugs/sex) - "yeah, i dont do drugs, drink, or have casual sex. You do? ok, your choice man."
Asshole stright edge kid - Yeah im SxE and im fuckin better than you becasue of it, i dont poison myself and you do, your fuckin stupid as hell, i hate you all, go fucking burn yourself"
Scene/Fashioncore kid - (Wearing black x's on his hands and a black bandana over his face and his long died black hair) Yeah, Grr im SxE, im cool, wanna be my friend, im SxE, cmon im SxE you gotta like me, im cool." might also say that while drinking or smoking.
Hardliner (sees someone drinking or smoking, not bothering anyone, no one is in their range of 2nd hand smoke)
*goes and gets somewhere from usually 1 to 10 more hardliners then beats the hell out of the person drinking or smoking, some with brass knuckles or baseball bats* The beat up kid usually has to go to the hospital, and sometimes even dies