The new wave of music to reign over the majority of the teenage population in the united states in which has been growing since 2007. In comparison to the 80's hair metal and glam metal waves, fagcore is not named discriminately. It's named for the use of clothing (tight jeans and strange haircuts) and the feminine approach toward hardore music.
Dan: Do you want to come see Asking Alexandria with me next weekend, dude? They're fucking epic.
Jake: No, it's fagcore. They pretend it's metal, and they all look like Justin Biebers league of older lesbian sisters.