When you're nice and let the people in front of you as you get on the escalator...

But then they turn out to be those type of people who don't understand the "stand right, walk left" concept so you're stuck just standing behind them. 

Crowding at the subway doors

When there is space a few steps in, a smidge farther from the door. 

I understand wanting to be near a door when your stop is coming up but half those people aren't even doing that!

Elevator etiquette

Stupid neighbour on my floor was coming out while I was waiting for the elevator along with another lady. The elevator came and I held the door for about 30 

This is why I've always said people who wear socks with Toms are the worst