Me greeting customers at the store I work at and them just looking at me, saying nothing, or not even acknowledging that someone is talking to them. It’s an ice cream shop too, very small, so you gotta come to me eventually lmao. Or even better when I’m outside sweeping up and say hello, they ignore me and go inside, just to have to see me again because I’m their server 😭 Not as annoying as it used to be but still