We never had Justin Bieber pegged as a big heavy metal lover, but maybe we misjudged the little twerp -- while he doesn't seem to have any Slayer or Mercyful Fate tattoos, it turns out he is in fact a big fan of Metallica.

However, please note, he will take his order of metal pre-'Enter Sandman.' That's right, the teen pop sensation apparently digs his Metallica vintage style: "‘One,’ ‘Fade to Black.’ Those are my jams,” the kid tells GQ magazine.  It's hard to argue with his choices -- most fans would gladly take 'Ride The Lightning' and 'Kill 'Em All' over 'Load' or 'St. Anger' any day.

In the profile, the "Beeb" professed not only his love for those early Metallica tracks, but also to hitting the sauce, although not in anything close to the legendary quantities his newly revealed metal heroes were known for consuming. "For me, it's just like, I like to be in control of myself. I mean, I've had a beer, like, before.... But I never get out of control."

Ahhh, give him time, with that Metallica blasting and the suds flowing, the newly turned 18-year-old is ready to hop on that Lohan derailment train, right? Well, maybe not: "I keep my guard up a lot, because you know, you can't trust anyone in this business," Bieber said. OK, can't argue with that.

One last note - despite being Canadian, every young girl's favorite haircut on two legs speaks nothing of Rush! Zero! What's the deal with that, JB?