Sir Patrick Stewart only recently discovered he isn't circumcised.

The 76-year-old actor always thought he'd had the procedure as a newborn baby and was shocked when his doctor confirmed his manhood is fully intact after his 38-year-old wife, Sunny Ozell, brought the issue to his attention.

Speaking on the 'Graham Norton Show,' the 'Logan' star said: ''One night with my wife, as you do, we were talking about stuff and I mentioned my circumcision and she said, 'You're not circumcised.' 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'.

''I happened to be seeing my doctor the next day for a check-up so 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 took a closer look and said, 'Not! I am Jewish, and definitely know the difference!'''

Patrick immediately regretted sharing the intimate story, adding: ''Oh no, my grandchildren will be watching this!''

The British star, who plays Professor X in the new 'X-Men' film, has been feeling emotional as the role marks his last appearance in the franchise, as well as his co-star Hugh Jackman's last time playing Wolverine.

He said: ''Last week we were at a screening in Berlin sitting next to each other and when it got to the very emotional ending and I noticed Hugh wipe away a tear, then I did the same and during the credits he held my hand and I was done, I was weeping and sobbing. While the credits were rolling I realised that if it was the end, there was no more perfect and beautiful way to say, 'au revoir, goodbye, adios.'''