When he comes to after the procedure, he’s perturbed to see several doctors standing around his bed.
“Son, there’s been a bit of a mix-up,” admits the surgeon.
“I’m afraid there was an accident, and we were forced to perform a sex-change operation. You now have a va**na instead of a p***s.”
“What!” gasps the patient.
“You mean I’ll never experience another erection?”
“Oh, you might,” the surgeon reassures him.
“Just not yours.”