While Russell Brand is usually pretty genial and cordial, even when discussing his divorce from Katy Perry, he wasn’t so friendly when U.K. talk show host Graham Norton quizzed him on the split.

The Mirror reports that Brand was furious with Norton for bringing up his ex in front of his mum. Brand refused to answer the question, instead gazing out into the crowd in anger. “My mum is here,” Brand fumed. “She got upset when you dragged up my marriage. I saw her cry, Graham. That’s the reality because it’s real people, Graham, that’s my real mum,” the usually verbose Brand added. “I have come here to promote a film and you made my mum cry. I don’t see you as that sort of person, Graham.” Don’t mess with Mama Brand!

Norton replied, “I don’t see myself as that kind of person.” Rusty wasn’t having it though, cutting back with, “And yet you are.” Ouch!

The host with the most tried explaining that Brand was sitting in the same place that his ex wife did merely one week earlier and that it’d be “weird” if he didn’t mention K.P. That didn’t sit well with Brand, who retorted, “Will people sit and think ‘Oh that’s odd?’” It turns out that the query hit Brand by surprise, which may be what bugged him about the most (aside from making his mum upset, of course). “What I would have done, mate, in your position is come up to me before the show and gone ‘Eh, listen it’s a bit odd your ex-missus was on last week. I might mention it, is that OK?’” Brand suggested. “But in all of the chatting and the research backstage, no one mentioned it.”

Brand added, “Some human beings get married and hopefully it works out for them and maybe it won’t. If people get divorced, maybe that is a sad thing. I don’t know what is your show about?” Dayum! Though Norton apologized for the breach in interview etiquette, Brand closed by telling Norton that he’d “stabbed him in the back.”

A source explained to the tab, “Graham didn’t mean to upset Russell but felt he had to ask at least one question about Katy. Other journalists have quizzed him on it all week so perhaps he’d had enough.” Ya think?!

If you’re looking for video of Russell’s rant, you won’t find it — it was cut from the show!

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