Cheyne Thomas, Miley Cyrus' assistant and good friend, recently posted a video to YouTube that has gotten Demi Lovato's fans pretty riled up. They have reason to be, as Thomas mocks Lovato's life-threatening addiction issues with cocaine in the brief clip, Hollyscoop reports.

"I can only go 30 to 60 minutes without coke," Thomas quips in the clip before chugging some Diet Coke from a bottle. It's a reference to the 21-year-old pop star and "X-Factor" judge's recent brave admission during an interview with Access Hollywood that in the past, she would sneak cocaine onto airplanes as she had trouble going any more than 30 minutes to an hour without it.

While it's unclear who was holding the camera while Thomas openly mocked Lovato, some are speculating it was Miley Cyrus herself, even though she has been very accepting and supportive of the star before and after she received treatment for her issues.

Lovato and Thomas also shared a recent and (mostly) since-deleted Twitter exchange in which Lovato first posted, "You are who your friends are," which Thomas retweeted before engaging her in some passive aggressive banter (see below).