Things got a bit crazy at Katy Perry's 'Rock in Rio' concert.
The star invited up to the stage a very excited woman named Rayane who proceeded to kiss Katy's neck, nuzzle her b00bs and slap her on the butt.
Rayane, or "Rairairairai" as Katy called her, did give some very valuable Portuguese lessons though.
Pizza is apparently the same in English as Portuguese. Pizza brings everyone together.
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