Miley Cyrus -- Of Course I'm Singing About Ecstasy, You Idiots

Here's a shocker ... Miley Cyrus just admitted she actually IS singing about ecstasy in her new song "We Can't Stop" -- claiming she and the song's producer originally lied about the song's real lyrics in order to get radio play.

You'll recall, the song caught a lot of flack for its overt drug references -- including a line that sounds like "dancing with molly" (aka MDMA).

The song's producer insisted the line was actually "dancing with Miley" -- but the singer is now saying it was all a lie.

Miley told the Daily Mail, "If you're aged ten [the lyric is] Miley. If you know what I'm talking about then you know. I just wanted it to be played on the radio and they've already had to edit it so much."

And if that wasn't clear enough, she added, "I don't think people have a hard time understanding that I've grown up. You can Google me and you know what I'm up to -- you know what the lyric is saying."

And now here's the really hot music video.