People who actually care about you're, your, their, there, they're, to, or too on the internet.
Seriously, what kind of person cares about spelling at a place where most communication is text-based?!
Mine would be
-People who attempt to excuse all sorts of moronic behavior by saying "I was drunk/high".
-People who act as if the internet exists separately from the "real world", especially nowadays. I work mostly online and it pays my "real" bills, so I guess I don't get why people feel the need to seperate the two to such a degree. Is it an escapism thing?
-Anyone who spends more time looking at their phone than their date/friends.
-Political "slactivists" of all stripes
-Hypocrisy, especially when it's coupled with weak rationalizations.
-People who will swear up and down that they didn't say/do something when I JUST saw them do it.
-Women who say they're "fine" when they're annoyed/upset with you.
But worst of all?
-When someone uses up the last of your TP and doesn't have the decency to refill the dispenser. You monster.