According to the Telegraph:
In a case considered so unusual it was written up in a medical journal by the three operating doctors, the man inserted a four-inch steel fork into his urethra in an attempt to achieve sexual gratification.
But the fork became stuck and was not visible when the man presented to doctors hours later.
The doctors could feel the utensil and observed it on X-rays. They then extracted the fork free using forceps and “copious lubrication” while the patient was under a general anaesthetic.
The case was written up in the International Journal of Surgery Case Reports two weeks ago in a paper titled “An Unusual Urethral Foreign Body”.
GAAAAAAAAAAH! My dickhole hurts just thinking about this. But in case you yearn for more, you can read the whole paper from International Journal of Surgery Case Reports here. It includes some images that will fuel your nightmares.