Greg DeGuire / Wireimage / Retna Digital 1 / 2
Greg DeGuire / Wireimage / Retna Digital 1 / 2

Billy Bob Thornton has hit another low note in Canada.

The actor-turned-singer, 53 -- who got testy during a Canadian radio interview earlier this week -- was booed while performing with his band, the Boxmasters, Thursday night.

"It seems as if when I say something it's in the news," he told the crowd, referring to his bizarre interview, during which he cursed at the host and referred to Canadian audiences as "mashed potatoes with no gravy."

The audience immediately began booing, according to the Toronto Sun.

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"Boo all you want," Thornton told the crowd, "but I want to say something we're really happy to be here, but I need to say something. I talked to this a--hole yesterday."

Thornton told the crowd he was irked that the host introduced him as an "Oscar-winning screenwriter, actor and director." He said producers assured him that his acting career would not be mentioned during the interview.

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"I don't really like sensationalism," he told audience at Massey Hall. "If you look someone in the eyes and promise them something, and you don't do it, you don't get the interview. That's the way it goes."

Thornton assured the Sun that he "loves Canada." Asked what he meant by the "mashed potatoes" comment he said: "I was talking about the guy who was interviewing me."

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A rep for Thornton defends the way the actor acted during the interview.

"This is a non-story," his rep tells Usmagazine.com. "If you watched the video you will see that he simply elected not to engage with the interviewer because of the direction of the interview from the outset."