Two things that drive me nuts:
1. People who don't pick up their feet while walking. Rather, they shuffle along making shuffling noises. I make a point of looking at their feet in disgust but, let's face it, if you are too lazy to pick up your feet between steps then you are also too lazy to take note of disgusted looks at your feet. I want to punch you shuffling people in the face.
2. People who can't park. People: I make sure that I am parked with equal distance on either side between my car and the lines on the pavement. If I get out of my car and notice that I have parked too close to a line, I get back in my car and fix the problem. I am sick and tired of returning to my car to find a freaking mini-van parked within millimeters of my driver's side door. Not only am I left with wondering how the hell you got out of your freaking mini-van (and how you expect me to get in my car) that is parked so close to my car, but I am also left wanting to await your return to your vehicle so that I may punch you in the face.
Merry Christmas. Ho Ho Ho.