I looked it up and this is the first line in the wiki: "Straight edge (sometimes abbreviated sXe or signified by XXX or X) is a subculture of hardcore punk whose adherents refrain from using alcohol, tobacco and other recreational drugs, in reaction to the excesses of punk subculture." Straight cut, don't do drugs. This is the second line: "For some, this extends to refraining from engaging in promiscuous sex, following a vegetarian or vegan diet or not using caffeine or prescription drugs.[1] The term straight edge was adopted from the 1981 song "Straight Edge" by the hardcore punk band Minor Threat." This says for some, they don't have sex, or eat meat, or drink caffeine. These are just he more extreme edgers.