My last name rhymes with "tuna" so growing up I was always called tuna or tunafish. Then in college, different friends turned the tuna in to toona and started putting all sorts of things after it. Toon-daddy, toon-diddy, toona-man and eventually toon-dawg. Seem appropriate for the SY forum.
Great thread idea and interesting stories.

In the beginner's mind there are many possibilities, in the expert's there are few -Shunryu Suzuki