While many of Kuma's Corner's patrons might be tattooed biker dudes and rockabilly chicks, that doesn't mean they don't enjoy a touch of class when it comes to their food.

Part metal bar, part fancy burger joint, Kuma's, which has been "harshing our mellow since 2005," is fast becoming the top burger spot in Chicago, attracting customers from from all over the country.

Kuma's, which means "bear" in Japanese, gets its title from the owner's old dog of the same name. What originally began as a contemporary American bistro in 2005 quickly became dedicated to joining the owner's love of heavy metal with his love of the all-American sandwich.

"Separately it'd be just another metal bar or just another burger joint," explains Luke Tobias, sous chef at Kuma's Corner, "but together it is a devastating combination."

The Motörhead features goat cheese, kalamata olives, oregano, tzatziki, onion and tomato while the High On Fire comes with Siracha hot chili sauce, prosciutto, roasted red pepper, grilled pineapple and sweet chili. The most popular, Tobias says, is the Kuma burger -- a 10-ounce patty topped with bacon, cheddar and a fried egg.

Due to its recent boom in popularity, including a visit from ultimate metal fan, Lady Gaga ("She waited in line just like everyone else and we did not turn down the music," Tobias says), expect to wait anywhere from 30 minutes to three hours.

Some more tips: Don't show up thinking you can watch the game with your bros, don't request any songs and, sorry, no reservations accepted. Despite all of this, customers aren't complaining. Kenny Bernat, Chicago resident and occasional metal fan, gets the Mastodon burger: barbecue sauce, cheddar, bacon and frizzled onions. "The band is grossly overrated," says Bernat. "The burger is not."