Miley Cyrus says she made a HUGE mistake by inhaling a fat bongload of salvia at a party back in November -- and relents, "I'm disappointed in myself for disappointing my fans."
Two months after TMZ first posted the video -- Miley has told Marie Claire, "I'm not perfect ... I made a mistake."
When asked if she was judged unfairly compared to other kids her age -- the actress said, "But they're not Miley Cyrus ... They're not role models. So for me it was a bad decision, because of my fans and because of what I stand for."