A rumored “butthole cut” of the 2019 flop movie musical may actually exist, according to a visual effects worker who confirmed that kitty butts were first discovered about halfway through production while watching video playbacks.

“We went to call our supervisor, and we’re like, ‘There’s a f - - king a - - hole in there! There’s buttholes!’” the unnamed source told the Daily Beast. “It wasn’t prominent but you saw it . . . And you [were] just like, ‘What the hell is that? . . . There’s a f - - king butthole in there.’ It wasn’t in your face — but at the same time, too, if you’re looking, you’ll see it.”

The fur started flying about a rump-included version in mid-March. At that time, a rumor spread that a visual-effects producer was hired in November solely to remove pussy posteriors galore from director Tom Hooper’s footage.

“My new year’s resolution is to get the cowards at @UniversalPics to release the #ButtholeCut of @catsmovie. MAKE IT HAPPEN AMERICA,” tweeted writer Jack Waz, who said the graphic artist was a “friend of a friend” and suggested that “somewhere out there, there exists a butthole cut of Cats.” His declaration led to a furry flurry of support from tweeters who used the hashtag #ReleaseTheButtholeCut to exert pressure on the studio.

According to the anonymous whistleblower, the buzzed-about buttholes were the real rear-deal, although not an intentional addition to the movie, which has been lambasted for sloppily adding CGI fur to the actors.

“There was nobody that said, ‘We want buttholes,’ ” the source told the Daily Beast. “It was one of those things that just happened and slipped through.”

Universal has only released one statement about the backside debacle, with a spokesperson telling Vanity Fair, “Hopefully that will add to the magic and mythical nature of the cinematic treasure.”

The alleged “butthole cut” remains as well-hidden as a dollop of cat poop buried under a pile of kitty litter. Who knows whether the tushes take will ever surface? But in the meantime, there does exist a cheeky fan version that inserted backside enhancements.