I'm a waitress and that peeves me off. Or when their kids order and don't say please or thank you and the parents don't tell them to mind their manners and include a "please" or a "thank you." One that irks me but doesn't seem to irk others is when I approach a table with a "Hi! How are you today?" and they just respond with a curt, "Hi" or "Good." I mean I don't always enjoy a lot of small talk either, but sometimes it makes me feel a bit awkward Edit: I thought this was a thread of talking about what others don't consider to be rude that we do, I thought I was good to speak freely about something :(