In an interview with Howard Stern, Jelly Roll confessed that some of his tattoos were done in such unhygienic conditions that he developed staph infections ... until after he got a face tattoo ...

Jelly Roll's body is covered with dozens of tattoos the singer got when he was much younger, but as a 39-year-old, he now regrets getting most of them. The hitmaker, whose wife Bunnie XO, 44 ...

"And then I went to jail and got a couple ... tattoos in prison, but Jelly Roll said that he's well aware. "Oh yeah, listen, I've gotten staph infections from bad tattoos.

Jelly Roll is sharing his biggest ... also admitted to getting tattoos that were unhygienic. Sarah Kerver/Getty "I've gotten staph infections from bad tattoos. I've learned nothing," he said.

Jelly Roll has some major regrets when ... he's made a series of poor decisions when it comes to his tattoos. "I've gotten staph infections from bad tattoos. I've learned nothing," he said.

On a recent episode of SiriusXM's 'The Howard Stern Show,' the country singer admitted that some of his tattoos "suck bad" Jelly Roll is sharing ... "I've gotten staph infections from bad tattoos.