"I think I saw Kylie Jenner wearing one of their shirts, but I never heard of them," says one kid when seeing Metallica for the first time. Actually, it was Kendall, and she wore a Slayer and a Megadeth t-shirt, it was Kim who wore a Metallica shirt. This video is pretty hilarious, showing kids Metallica's "Hardwired" for the first time.
This is how "real" people react to metal.
See also "Old People Listen to Slipknot"