What grinds my gears?
Traffic does. Not much gets me bothered as much as sitting around stationary in the car.
Expanding on Traffic... GRIDLOCKERS! Nothing is worse than the shitheads that try to beat the orange light at an intersection only to block the entire intersection so that when the light turns green for you, you cannot go anywhere.
Mowing the lawn. Its hot out. Its loud. And worst: it is just going to have to be done again in 5 days anyway. Do you know the story of Sisyphus? If not, look it up, because thats what it is.
Paying for haircuts. Same concept. Why pay so much for something that literally grows right back?
I could probably go on for a while, but I'll stop here for now.
Portal 
