People who do everything else but drive while behind the wheel of a car. (ie text, talk on their phone, put their dog in their lap, smoke and drink coffe at the same time, etc. I even saw someone watching a movie once!)
The sound of mechanical pencils rubbing on the paper. & When I think about someone scratching their nails on a chalkboard. AHH. Or when my mom, she's a nurse, talks about some of the gross things she sees at the hospital.
I hate it when one assumes that a person with a disability cannot hear. Specifically, when a teacher tells me, in front of the student, that the student cannot read what they are reading or whatever. It gets me boiling...I'm mad now!