Pre Op Surgery

So I had surgery on Tuesday, March 6th. The following is a true story.

"Have you ever had surgery before," a nurse asked as she was inputting my information into her computer.
"Yes. Once, on my back, three years ago," I answered slowly as the morphine began to kick in, taking away the pain pulsating throughout my back.
As another nurse continued to get me ready for my surgery she stopped at my right calf.
"What about this scar," the second nurse asked. "What was this surgery for?"
"That's not from a surgery."
The first nurse stepped over to look at my leg as well. Both nurses looked at me as if I was just caught with my hand in the cookie jar.
"Sir, that's a surgical scar," the first nurse began to scold. "It looks like a botched surgery at that. We need to know all your past medical history."
"It's an alien surgery. I went to sleep with nothing wrong with my leg and woke up six hours later with that, just as it is."
The nurse looked at me as if I just lost my mind.
"It's true. That's also why you guys keep drawing so much blood from me, the aliens are using it to clone me."
"Okay then," the nurse said, going back to her computer without missing a beat. "Are you allergic to any medication?"