Patrick Stewart has no idea what an uncircumcised penis looks like (apparently) because in a recent interview on The Graham Norton Show, his wife had to tell him!

“One night with my wife [Sunny Ozell], as you do, we were talking about stuff and I mentioned my circumcision and she said, ‘You’re not circumcised,’” he said in the episode, which airs Friday, reports E! Online. “I said, ‘What do you mean? That’s ridiculous, I should know. All my life my mother has told me it was fashionable at the time.’”

The next day, Stewart was at a doctor’s appointment and decided to ask him, the professional: “While he was down there, I said, ‘By the way, my wife and I have had a little disagreement, I am circumcised, aren’t I?’” he asked. “He took a closer look and said, ‘Not! I am Jewish, and definitely know the difference!’”