While performing an intimate gig for BBC Radio in London this week, the 71-year-old rock legend was asked by DJ and TV presenter Jo Whiley what he thought about the 20-year-old pop princess' twerking, prompting McCartney to quip, "disgusting!"
"Of course I don't mean it," he said, according to the U.K.'s Express. "I don't understand why everyone's saying, 'Ooh she shouldn't do that!' It is nothing we haven't seen before. I mean she's a young girl and these days in that kind of field that she's in there's a lot of noise."
Macca noted the challenge younger artists have getting peoples' attention in this fast-paced, Internet-driven age.
"So you've got to do something to get above the chatter and that's what you'll see a lot of the guys, a lot of the girls, doing," he continued. "I don't think it was bad at all. She looked good, I thought."
As for whether he'd give the ol' bump and grind a go, he added: "I can twerk with the best of them!"
McCartney called her dance moves "only mildly shocking" and said he didn't have a problem letting his 10-year-old daughter watch Cyrus twerking.
Sir Paul has been doing the publicity rounds to promote his latest album, New, including a surprise mini-concert in New York's Times Square last week and holding a master class and performance for high school students in Queens.