People that walk about 10% slower than me, it's annoying, not slow enough to pass easily, but not fast enough that i can walk at my normal pace
Similar to the one KaptainLes just posted,
I find it so irritating when someone walks literally right behind me as I'm walking at roughly the same speed as me.
Don't tail me, either pull back a bit or overtake me.
People making you wait around for them when they ask you to do something
When you sit down with all your snacks and drinks for a movie and then can't find the remote.
When they are driving 10mph under the speed limit and won't turn
Waiting at a red light for people to cross the street who are too busy looking down at their phones...
People who lack spatial intelligence
Having to start the same sentence about 5 times because people keep talking over you, and you realise nobody is listening so you just drift away into the abyss.