People that travel 10 to 15 miles or kilometers an hour slower that the posted speed limit in the Supposedly fast lane on the freeway and will not move over when you come up behind them.
What has been pissing me off lately is people filming concerts on their cell phones, which means that they are probably watching the whole thing through the lens. Put the dang phone down and enjoy the show.
What really burns my butt is when TV shows or commercials use a door bell sound, which makes my dogs go crazy. I've got them trained so when it happens, I just shout out, "No, it's the TV", and they go back to sleep. I gots smart mutts, huh?