Just today, a student (high school) called me, "Teacher guy", and I've had him since school started in late August! There are still students who call me "Mr. Teacher" or just "Teacher"....like, "Hey, um, teacher, I have a question?" Yes, it is probably the LEAST of my annoyances but I know the names of all my students, and yet some don't even take the effort to learn mine. Does that go for any other teachers out there?