People lacking to give common courtesy to others 

Being interrupted / talked over 

People failing to be honest 

Talking while someone else is speaking 

Chewing with your mouth open 

Walking slow on the sidewalk 

Driving slow in the fast lane 

People not picking up after themselves in a shared space 

Biting your nails 

People not getting back to you -- either through phone calls / text / email 

People making snap judgments about others 

People not keeping their word 

Sitting in Traffic 

Having your umbrella turn inside out due to wind and rain 

When people don't make eye contact during a conversation 

Not covering your mouth when you cough 

People thinking their issues are bigger than others 

People who mumble 

Backseat drivers 

People who take their anger out on others 

People who need constant validity to the point where talking to them is a chore

Children not behaving in public places 

Going to the store and forgetting what you needed 

When your sock slides off your heel in your shoe 

Tangled cords and earphones 

People who bike on roads with no bike lanes