"Is it damaged?" he asked upon seeing a photo of her pet, Olivia Benson, during an appearance on “The Graham Norton Show.” "That's the weirdest cat I've ever seen in my life."
Swift, 24, who has always been known for speaking her mind, just shot the actor a knowing look. But she did get an insult of her own in when Norton flashed a photo of Cleese's oversized cat.
"It's a monster!" she said, mouth agape.
For the interaction, including Swift's thoughts on people who don't like cats, watch the video below.