As someone who used to work retail, I feel this. I have trouble socially and just want one phrase to mindlessly close out every interaction. I started with "have a good day," but as the day progressed, I would get more funny looks or comments like "...what's left of it." I'm sorry, is after 6pm no longer today? Today is a day, right? I ended up using "have a good one." While less formal, the funny looks and comments stopped.

People are funny. They think it's strange that I say have a good day as it's starting to get dark, but don't bat an eye at the fact that I'm only wishing them a good day. What about tomorrow? "I hope today goes well for you, but fuck tomorrow." Is the idea that they expect to see me every day? I deserve days off, too. I'm not going to be here tomorrow to wish you a good day, so maybe I should tailor it to my schedule to make sure you're covered until I see you again. "I have tomorrow off, so have a good couple days!" No, I'd have to change that every day... maybe "Have a good time until I see you again!" is better. What happens when I change jobs? I don't think I'll see them again, so I need to make sure their days are good from here on out? "Have a nice life!" That's worse somehow.

This reminds me of the end of sophomore year in high school. We were signing yearbooks, "Have a nice summer, hope you don't drown!" Thanks for the positive wishes, but now I'm going to worry about drowning every time I go swimming!