The Flaming Lips are recording with Miley Cyrus ... and doing some other things together too.

Lips frontman Wayne Coyne just sent out an Instagram pic of the pop star/controversy magnet doing something with rolling papers. We're guessing she isn't rolling a cigarette for herself.

But hey, we could be wrong. Take a look at the evidence below and judge for yourself:

Plus, Coyne included this little snippet of info with the pic: "Yup...... Recordin with Miley... High as f---...." So yeah, we're guessing those are gonna be some mighty messed-up sessions.

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