Anesthesia is fun, it's ok, you can admit it. But before that milk of amnesia flows, what do you want to say? My gastroenterologist used to say, "see you on the inside" before a colonoscopy.
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Related: Penn Jillette told a story of someone he knows in the medical field who would count down with the patient as they go "under". The same person would be there as the patient regains consciousness and would continue counting from where they left off.
I had seen two orthopedists for my seriously broken ankle. One was nice and pretty quiet, but the other one was an obnoxious smartass (I really liked him.) I thought the quiet one was doing my surgery but I was just about to go under when I saw this face looming over me. He was wearing a surgical mask but I saw the mischievous blue eyes and said "oh shit! It's YOU!" He responded with a maniacal laugh, and next thing I knew I woke up feeling like I was about to puke.