Miley Cyrus is seen smoking out of a bong, swearing and laughing uncontrollably in a video that has surfaced online.
Cyrus' spokesperson denied comment. The website TMZ , which posted the footage late on Thursday, said she was smoking the natural herb salvia, which is legal in California and has hallucinogenic effects.
"I'm having a little bit of a bad trip," she says into the camera after smoking. "Oh my god, Is that a (expletive) Liam look-alike or what the hell is that? Is that my boyfriend? Is that my boyfriend? (Expletive) Oh my god, you look so much like him. You look so much like Liam. Okay, is that me tripping? That doesn't look like Liam at all?"
She then laughs and rambles incoherently for several seconds. TMZ said one of Cyrus' friends shot the video during a party at the actress and pop star's Los Angeles home days after her 18th birthday in late November.
Cyrus and Australian actor Liam Hemsworth, 20, began dating in June 2009 while filming the movie "The Last Song", which was released in March. Cyrus and Hemsworth were reported to have broken up in August, gotten back together in September and were in November said to have split again. Both have not commented publicly about their current relationship.
Cyrus' father Billy Ray, who is also her co-star on "Hannah Montana", said on his Twitter page on Friday afternoon, half a day after the TMZ video was posted: "Sorry guys. I had no idea. Just saw this stuff for the first time myself. Im so sad. There is much beyond my control right now."