It’s common knowledge that Rosie O’Donnell is no fan of Republican presidential candidate Donald Trump, but the foul-mouthed comedienne’s recent performance in New York City revealed she’s utterly obsessed with hatred.

O’Donnell provided the opening act for a Cyndi Lauper and Boy George concert at Beacon Theatre on Thursday, and her vulgar, obscenity-filled routine was focused squarely on The Donald.

“Oh, that man depresses me,” O’Donnell said in a video recording of the performance posted to YouTube. “Lowly, orange shit stain. Did I say that?”

“You know, people have been saying I said I would move to Canada if he won. I am not moving to Canada. I am moving to Columbia … Presbyterian Hospital. The psych ward, four years, that’s where I’ll go if he gets elected.”

Moments later, an audience member shouted: “No politics!”

“That was politics. I’m glad you were paying attention,” O’Donnell shot back.

The Daily Mail also obtained video footage of O’Donnell’s rant, which appeared to devolve into vulgarity as it progressed. O’Donnell said her therapist told her not to focus so much on her enemy.

“Well I would rather give birth to a flaming iguana while taking a shit,” O’Donnell said. “I hate him. I hate him.”

O’Donnell also discussed a mutual friend she shares with Trump – a person who was “an enemy for years who’s now my friend.”

“He is friends with the shit stain, which worries me,” O’Donnell said, before describing Trump as a “shit stain with a tinge of orange.”

A man who recorded O’Donnell’s act later told the Daily Mail “not everyone was impressed” with her theatrics.

“People around me were shaking their heads,” the unidentified audience member said. “Rosie’s routine was just jaw-dropping.

“She sounds like she is obsessed with Donald Trump and it was what she spent most of her very short act talking about,” the man said.

The man told the news site “one man near me turned to his wife and said, ‘I really hope Donald gets elected so she keeps her promise and moves to Canada.’”

“Another lady was shouting, ‘Get off and let Cyndi sing.’”

O’Donnell’s obsession with Trump stems from a long running feud that involved numerous public jabs at each other, both on television and through social media.

Last month, O’Donnell sang a little diddy after the Broadway musical Disaster! that was focused on denigrating the presidential hopeful.

The feud seemingly started when O’Donnell mocked and criticized Trump for not firing Miss USA Tara Conner over alleged underage drinking in 2006, and it escalated from there. Trump called O’Donnell a “loser” over her remarks, among other things.

“Rosie O’Donnell is disgusting, both inside and out. If you take a look at her, she’s a slob. She talks like a truck driver,” Trump told CNN at the time, according to a YouTube video montage of the feud.

“So, probably I’ll sue her, because it would be fun,” Trump told Entertainment Tonight. “I’d like to take some money out of her fat ass pockets.”

Trump also called O’Donnell a “horrible human being” and a “terrible woman.”

Trump also criticized O’Donnell in 2011 when she announced her engagement to Michelle Rounds, who is now her ex-wife, according to The Daily Mail.

“I feel sorry for Rosie ‘s new partner in love whose parents are devastated at the thought of their daughter being with @Rosie–a true loser,” Trump tweeted.

Fox News host Megyn Kelly highlighted some of Trump’s comments in a question during the first Republican presidential debate about his use of words like “fat pigs,” “dogs,” “slobs,” and “disgusting animals” to describe women.

“Only Rosie O’Donnell,” Trump responded.

Ironically, the YouTube video of O’Donnell’s recent performance in New York City notes that the comedienne described Kelly as “Barbie bitch” in her routine.