It’s usually something that involves rudeness.
Walking by someone, saying hello, and they ignore you. Fyou.
People who get in the elevator before the passengers exit. Ugh.
People who leave their cart blocking the aisle to grab free samples. (*cough* Costco) I’ll just wait here until you get back, dick. Take your time. I crash into it now and move it. ha.
When a clerk opens a new checkstand and they say next customer and the asshole at the end of line darts over there.
I could go on but that’s the general idea.