I had a pilonidal cyst get infected deeply in my right butt cheek. They went in with a deep incision to take out all the infected tissue, then packed it full of saline saturated gauze to let it heal from the inside out. The first day after the surgery, the nurse changed the surface dressing, but never removed and repacked the gauze. The 2nd day, when they were getting ready to discharge me, the nurse was going to show my wife how to repack the gauze daily. She figured out pretty quickly that the gauze had not been replaced since the surgery and there was about 12-18" of gauze all scabbed up and connected to the inside of the wound. They gave me some IV codeine, had me lay on my stomach, and as my wife called, played the magic handkerchief trick dragging all that gauze out of my butt cheek. It literally felt like they were extracting my spine by pulling on the end of it before I kind of passed out briefly due to the pain. It hurt even worse than the botched spinal tap I had when I was getting diagnosed with MS.