Self-fulfilling, in a way…
OK smartypants, what happened to “that’s not the kind of linguistics I do”?
Layman: Doctor, in your practice, you study the teeth, right?
Doctor: No, I’m not that kind of doctor. I study the liver.
[next day]
Doctor: Man, that guy over there has really bad teeth, huh?
Layman: Well, well… Who’s “not that kind of doctor” now?