The need to always seem manly around other men...in particular the choice of music. Ride in the car with certain people, they always have to be blasting hard rock or rap, or hard country depending on your location.
Meanwhile I'm over here enjoying switching between pop, rock, new wave, alt and even my playlist of exclusively Elton John, Phil Collins, Peter Gabriel and Billy Joel
Friend, there's nothing wrong with enjoying extreme music. Its a bit weird when that's all someone cares about, but many people have a healthy obsession with extreme music and you shouldn't judge them for it.