My brother embarrasses his friends if they flirt with the waitress. “Ok, that’s enough. She doesn’t want to date you. Let her do her job.” It immediately gets a look from the waitress that the guy is a loser and then it’s awkward every time she comes to the table. 🤣🤣Agree with OP about people who are dicks.
Also, I’d add people who try to become best buddies with servers - usually it’s older people- and try to chat them up.
You can tell the servers are trying to be polite but have so much else to do and the diners are just oblivious.