Eccentric Lady GaGa triumphantly returned to Lollapalooza and decided to surprise Semi Precious Weapons fans with an impromptu appearance on stage over the weekend. The band was performing in the same stage GaGa made her Lollapalooza debut back in 2007, when no one knew who she was.

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GaGa, who was nearly naked in a fishnet outfit, rocked out on the drums, made out with the frontman, Justin Tranter, and finally stage dove and crowd surfed (watch video below). “If anyone calls Lady Gaga a pop star I’ll f***king kill them,” Tranter told the crowd. “She is a rock star, and she is helping, Semi Precious Weapons, bring rock’n'roll back. Rock’n'roll is back b**ches!”

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Semi Precious Weapons will bring rock’n'roll back? Seriously? GaGa is a pop dance music star. Deal with it!

Lady GaGa Nearly Naked Crowd Surfing @ Lollapalooza Video