She needs a muzzle.

As if things weren't already bad enough, Roseanne Barr attempted to explain her racist tweet about Obama aide Valerie Jarrett in a bizarre taped interview, and it did more damage than it did good.

“I’m trying to talk about Iran! I’m trying to talk about Valerie Jarrett about the Iran deal. That’s what my tweet was about. I thought the bitch was white!” she said, getting even louder. “Goddamnit, I thought the bitch was white. F—!” she screamed while smoking a cigarette.

The comedienne's behavior seems totally unhinged and erratic during the sit-down, and we're seriously starting to fear for her mental health and wellbeing.

The star's hit show was canceled in the wake of her comments, and she's been on an apology tour for months, but this totally contradicts all the regret she claims she feels.

Where is her publicist in all this?!