Miley Cyrus smoking out of a bong? on her 18th birthday?

I would not believe Miley Cyrus would do this? Especially on her 18th birthday. Miley Cyrus is a Celebrity, a role model to little kids who watch her show and then they are going to grow up and see that she is turning into a "Pot Head" she was smoking "Salvia" which I believe she wasn't smoking "Saliva"