Sharp things and nudity don't go well together. Hugh Jackman learned that the hard way.

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On The Graham Norton Show, the actor recounted how he almost castrated himself with his Wolverine claws. Hugh, who was filming a nude scene for the new X-Men movie at the time, said, "There was a very intense first scene and I insisted on a closed set. I ran around the corner and all the female members of the crew were gathered there. I tried to cover myself and cut my inner thigh. It was just the inner thigh, thankfully. The metal claws had to go -- you can't have bits and pieces flying off."

X-Men: Days of Future Past opens on May 23rd.