One of my non-PMTS friends refers to me as a "Harbie." I kind of like it and it works for him.
In trying to convince him to come to a camp, I found myself saying things like, "Just come to one "HARB-A-THON" meet a bunch of other "Harbies" and you'll be convinced.
Of course this leads to all kinds of other Harb-isms.... not the least of which was the answer to his question: What do you do at camp?
"We work Harb and play Harb!"