That’s nuts.

An elderly Florida man with a bizarre castration obsession was busted by cops for allegedly performing a botched, at-home surgery on another man whom he met through a site on the dark web for those with eunuch fetishes, police said.

Officers with the Highlands County Sheriff’s Office showed up to 74-year-old Gary Van Ryswyk’s home in Sebring just before midnight Sunday after a 911 hang-up, officials said.

“These are pretty routine and deputies respond to many of them per shift. But most of them don’t make the cut when it comes to being memorable. This one will definitely hang around in the memory for a while,” the sheriff’s office wrote on Facebook in announcing the arrest, adding: “This one is a little … let’s just say sensitive. You could even say it’s kinda nuts.”

When Van Ryswyk answered the door, he told a deputy that he had just performed a castration on a man, “and, to say the least, Van Ryswyk dropped the ball on this one,” the sheriff’s office quipped.

The heavily bleeding victim was found on the bed with a towel over his groin.

“Nearby, there was a pink container which held two body parts that had recently been much closer to the victim,” police said.

The cut-up man was rushed to an area hospital and later flown to a regional medical center, where he was listed in stable condition.

According to authorities, a room in Van Ryswyk’s home was “set up like a surgical center with medical equipment and painkillers.” A camera was also set up to record the procedure.

Van Ryswyk admitted to deputies that he met the man on a website called “eunuch.com” and that he had told the man he had castrated animals and even removed one of his own testicles in 2012.

He also said he performed a similar castration procedure on a man in a local motel several years earlier.

Police said that surgery “turned out pretty much like this one.”

The sheriff’s office said Van Ryswyk could not remember that man’s name and noted that that man went to the hospital, but law enforcement was not notified.

Police arrested Van Ryswyk on Monday and charged him with practicing medicine without a license resulting in bodily injury — a second-degree felony.

His bond was set at $250,000.