Pet Peeves

Does anyone have like a really bad pet peeve they can't control? We were talking about that during my Literature class. Our bellwork was to list 3 pet peeves that repulses you. Mine were smudges on glasses, eraser shavings on the table or on the tip of my pencil eraser, and biting my fingernails. The smudges on the glasses really bother me because I have a lot of friends that wear glasses, and when they are dirty, I literally snatch it off their face and clean them myself. My friends look at me like I'm the freaking Igor with my back hunched over, cleaning the glasses. I give it back to them, smiling, like I didn't do anything, except for my success of clean glasses. They do thank me because they can see clearly. Hmph. Clean glasses equals clear vision. What are is your worst pet peeve(s)?
By the way, the kitty in the picture had nothing to do with the post, it's just a picture I drew today. It's not offending the kitty or anything, it's just a random picture. I don't mean to hurt the kitty's feelings. Good day.