Idiots in the left lane who aren't actively passing.
Idiots in the middle lane who aren't actively passing (thus exacerbating the left lane issue)
People driving while not paying attention.
People who wait till the very last second to attempt to merge.
People who wait 3-5 seconds before actually moving at a green light.
People who use 'everyone' and 'no one' incorrectly.
People who use the phrase 'cuck'.
People who will stop in the middle of a grocery store aisle w/o moving their cart over
Pedestrians who walk across a street slower than a 1 legged retiree.
People who will use a drive thru ATM, and spend time re-arranging their wallet or purse before driving forward once the transaction is done.
People who make negative, all inclusive generalizations about the opposite sex, and still believe that they themselves don't simply make repeatedly shitty choices.
Pro lifers
Religious types who insist on foisting those beliefs on others, or insisting that they be accomodated somewhere other than a place of worship.
Video game cash shop advocates
People who believe they are owed content by creative forces.
Capitalists who believe that the wants of a shareholder are more important than those of the employee
Liberals who feel that gov't should have control over what we own
Right wingers who feel that gov't should have control over our own bodies / personal choices.
People who consistently interrupt / finish sentences for you.
People who never ask how anyone else is doing, or show concern for anything other than their own current status.
P....
Actually, this list would be easier if I listed the things that don't piss me off.