Everybody stereotypes or jumps to conclusions about something or someone, its human nature. We do it with individual people, races, cultures, communities and even whole countries, and of course the occupational stereotypes.
Teaching is still a women dominated profession and we keep hearing about the ones getting caught doing a little extra curricular activities with their students.
Is there anybody who doesn't know a lawyer joke or have something positve to say?
Doctors have that God complex. Personally, I notice this trait more in the Neurosurgeons.