I made the mistake last year of telling my students about this phobia. It did actually pertain to a literature lesson I was teaching, but bad move. Look what greeted me this year, in fact, yesterday in my desk.
It's a sign of love really, or so I think. My students will drawn dots or circles on my board when my back is turned, and I also get pieces of notebook paper with holes punched in them taped to my car window. High Schoolers.