what is that one thing that pisses you off but you hate to admit it?

People getting on a rush hour bus which is the busiest in the city because it's the university line with an obesity scooter and making everyone get off so they can back ever so slowly on, making everyone late, and they have like 90 bags draped all over the scooter because they've just been shopping so there's like no room, AND they've brought their "service dog" who is jumping on the lap of some poor Muslim lady who is obviously terrified of it.