I used to work as an EMT. When my partner and I responded to a vehicular collision, we had to immediately black tag the family of four in one vehicle, while the crackhead who crossed two lanes of traffic into oncoming vehicles, was injured pretty badly. The medic I was riding with that night was a lazy son of a b, and decided that it was my call, and he spent about five minutes talking to the volunteer firefighters on scene doing cleanup. As the druggie was in the back of my truck, I worked on him the entire time, throwing everything I had at him to keep him alive. My partner in his infinite wisdom got in the truck finally and we were off. During the ride to the hospital the druggie came to and looked at himself and said "whoa bro...you must be some kind of...wizard...man...guy." We dropped him off at the hospital and I didn't think anything of it until the next day when everyone started calling me "the wiz" or "wizard...man...guy" so the name stuck and has been my moniker ever since.