Cannibal killer Jeffrey Dahmer constantly terrorized correction officers with sick, flesh-eating humor, his former minister told The Post.

“If he saw a guard that was nervous and standing near enough to hear him, he would say, ‘I bite,’” said Pastor Roy Ratcliff, 68. “Usually the guard would jump away and that would make Jeff laugh.”

Ratcliff also said Dahmer — who confessed to killing 17 men and boys and dismembering and eating some of them — put a sign on the wall of his cell that read, “Cannibals Anonymous Meeting Tonight.”

“He sort of played with his persona to exaggerate it and make people more fearful. This was just his way — a morbid humor to deal with his hopeless situation,” Ratcliff said.

Ratcliff, who performed a prison baptism on Dahmer to cleanse his soul, even got the crazed cannibal to admit that he ingested the biceps of only one of his victims.

“However, when he was arrested and they found body parts in the freezer — a heart and a liver — he told me that he was ‘saving them to eat for later.’”

On Sunday, The Post revealed that convicted murderer Christopher Scarver bludgeoned Dahmer to death in 1994 because he was disgusted by the practical jokes.

Scarver, 45, said Dahmer would make severed limbs out of prison food, douse them in ketchup to simulate blood and place them around the prison to freak people out.