Yikes! That happened to me. About 10 years ago, I had to have surgery to repair a left inguinal hernia. On the morning of the procedure, the nurse was preparing me for the operation and going over the paperwork. I was already freaking and frothing at the reality that I would soon have my crotch cut and crocheted when the nurse said, Okay, Mr. Frame, if youll just sign this form giving your consent to have a right inguinal hernia repair, youll be good to go.
No, no! Its not the right side, Nurse Ratchet. Its the left side! I whipped my fashionable gown aside and pointed to the creepy bulge on the left side of my loins. Quick, give me a marker!
She fetched me a Sharpie and I drew a big X atop the summit of my problematic protuberance. I thanked her through gritted teeth, and watched her closely as she changed the surgical order. Then I signed the form and was wheeled off to surgery.
Prior to being knocked out, I displayed my X to everyone in the operating room, just to make sure. They all found this much more amusing than I did. Ultimately, the operation was a success. Whew!