People who shorten my name. I don’t like the short version, no one calls me by the short version. Please don’t call me that.
People who don’t say thank you if you hold the door open, let them out in traffic etc.
Phones on tables - anywhere in a social setting. Coffee shop, dining table, restaurant.
Children who don’t ask to leave the table, especially in someone else’s home.
Visitors who let their children run upstairs. In shoes.