A student asked me the other day whether the only reason I teach logic is so that I can call myself a logician. I explained that I am not really a logician, because although I teach logic, it isn't where my philosophical interests really lie.
"No, no," I exclaimed, "I care about things like meaning and the ontological basis for it, questions centrally located within metaphysics. That's why I'm a metaphysician. You, know, sort of like a physician, but even better, meta!" Or should I say that I am an ontologist? I mean, I can't cure your cancer, but I can tell you whether you exist.