Miley Cyrus Refers to Herself as a 'Stoner' at 19th Birthday Party

Earlier this week, Kelly Osbourne told E! News she was planning on making pal Miley Cyrus' 19th birthday bash "the sickest thing she's ever seen in her life." In doing so, Ozzy's daughter might have inadvertently given her good bud another media scandal.

During the party, held Wednesday (Nov. 23) at the Roosevelt Hotel in Los Angeles, friends presented Miley with a cake decorated with a likeness of Bob Marley. It seems this might have had little to do with the erstwhileHannah Montana's fondness for reggae music.

"You know you're a stoner when friends make you a Bob Marley cake," Miley can be heard saying in a video captured by The Daily and posted on TMZ. "You know you smoke way too much f---ing weed."

"I thought salvia was your problem," Kelly joked, referring to a December 2010 incident in which Miley was caught on tape hitting from a bong. The singer and actress denied the substance inside was marijuana and insisted it was salvia, a hallucinogen legal in California for those over 18.

Miley's reps have yet to respond to TMZ's requests for comment, but Osbourne took to Twitter to clear her friend's name.

"u guys if @MileyCyrus is not recording/filming/touring she is works everyday how could she possible do all that if she was a stoner!" she tweeted. "#think"