Don't diss Taylor Swift's cats! British actor John Cleese took the “All Too Well” singer by surprise on Friday, Oct. 10, when he called her cat "weird" during an appearance on the UK's The Graham Norton Show.

Reducing the Grammy-winning singer to temporary silence with his rudeness, James Bond star Cleese, a big cat lover, reacted in a hilarious way when a picture of Swift's cat Olivia Benson was shared with the show's audience.

"How did it have the accident?" Cleese asked, referring to Swift's cat's unusual appearance and folded ears.

"What?" replied a stunned Swift. "What accident?"

Continuing his rudeness, the British comic continued, "Is that a proper cat? That's the weirdest cat I've ever seen in my life."

Swift and Cleese managed to patch things up as the conversation continued, at least until the inappropriate British actor decided to liken cats to women.

Watch the whole interview above and see how Swift puts her co-interviewee in his place when he suggests women and cats are both "unpredictable and cussed."