Katy Perry Gets Groped, Kissed Onstage by Dazed Fan in Concert: "I Think She's Rolling!"

Rock 'n' rollin' in Rio? Katy Perry has met a lot of fans in a lot of places, but this is one encounter she's not likely to forget anytime soon. On Monday, Sept. 28, the "Roar" singer performed at the Rock in Rio festival in Rio de Janeiro, Brazil, where she invited a fan to join her onstage. But this wasn't just any fan.

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The girl, clad in a happy-face bustier and black shorts, appeared more than a little dazed as she approached the pop superstar. She proceeded to embrace Perry, 30 — and then she just didn't let go.

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"She's kissing my neck!" the "Last Friday Night" performer quipped as the girl wrapped her arms around the singer's waist and pulled her close. Later, as they stood talking to the crowd, the fan even (accidentally?) grabbed Perry's breast.

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"I might need that water back. We need some water," Perry joked. "I think she's rolling!"

The spaced-out fan continued to kiss and grope Perry throughout her time onstage. She got especially handsy when the star gamely offered to take a selfie.

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"Okay, okay, okay!" Perry exclaimed before sending her back into the audience.

Watch the bizarre video above!

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This article originally appeared on Usmagazine.com: Katy Perry Gets Groped, Kissed Onstage by Dazed Fan in Concert: "I Think She's Rolling!"