While fans are anxiously hoping to see Evan Peters finally appear on the current season of American Horror Story, the actor revealed that former co-star Jessica Lange got to see all of him during an onset mishap a few seasons back.

Peters was a guest on Conan Tuesday night, and he told the host about the time he accidentally flashed Lange while they were filming a scene.

“I basically am leaned over Jessica Lange’s desk in a hospital gown, bare-ass, so I put a cock-sock on," the actor revealed.

Peters said that when the scene was over, Sarah Paulson came over to him to say, "Oh, sweetheart, it's okay."

At first, he was concerned that she thought he just gave a bad performance, but upon further investigation he discovered it was something else entirely.

"I look over and Ms. Lange is telling the PA that apparently my balls were in her face the whole shot," he said. "Apparently, a cock-sock is not just a cock-sock, it’s a cock-and-ball sock. So lesson learned. You’ve got to swoop down and sheathe the balls as well."

An important lesson for us all.

Watch him relive the moment with Conan in the clip below.

h/t: EW