Mine has nothing to do with Alfas, really -- although I owned my first Alfa about the time the name came into being.
The story is actually kinda gruesome. Back when I was in medical school I was playing football in an intramural league. As often happens, the game got a bit heated as it went along -- med students are pretty competitive creatures.
Anyway, the game's intensity was picking up and I had something of a collision. Basically, a receiver on the other team was running a pass route that brought him across the middle of the field. I was on defense, crossing toward him from the other side of the field. The quarterback threw the ball, I lowered my head and *WHAM* He broke his collarbone and nose, but, while trying to duck out of the way, his giant (and surprisingly bony) mellon head rammed into my cheek.
I fractured my cheekbone, and the class' email newsletter that week included a mock injury report in its description of the game (I wasn't the only one hurt in the football game) which included the very cryptic and medically geeky:
Chris R: zygomatic (probable)
The sentence stuck with me, and zygomatic became my log in name.