"You know metalheads, they pretend to be hardcore but they're just hippies who like leather."
That's an actual line from the Cartoon Network show The Amazing World of Gumball, in a scene where the characters hilariously describe metal to each other including the nuances between grindcore, black metal and viking metal vocal styles.
We never even expected to hear these words uttered on a kids cartoon, but this is important info to know. Teach 'em young!