A few things that annoy me that I'm not going to explain.

Inconsiderate people.
Unreliable people.
People who treat you like you aren't capable.
People who treat you like an inconvenience or liability.
Usurpers.
People who have the power to do great things but don't.
People (and chickens) who try to mount you when you don't want them to.
People who want you to be a part of their poor decision.
People who listen only to their heart or their head.
Names of products, or advertisements for them, that tell you nothing about it.
People who call you gross to your face even though you're not gross, just different.
People who feel entitled to do something but they're really obligated to do the opposite.
A lack of people.
Too any people.
People too frequently.
Empty relationships.
Confusing websites that won't let you upload mature content.
People who say one thing but act the opposite way.
Pandering.

And there goes the balloon...
That's better.
: )