TMZ can investigate what it is that Miley Cyrus is smoking out of this bong all they want, it’s almost irrelevant. More important is her technique. She not only percolates it nicely, but also clears the chamber, and then holds that shit in, without coughing. It’s definitely not her first time. Now if someone could explain why this recently turned 18-year-old sounds like a middle aged woman I’d be content.