PS Most of my customers were in a really bad mood the following day, but then, many are in a really bad mood every day, being as I work in a pharmacy and almost everyone in there is sick or hurting in some way.
But that's about it. A few were really hung over as well.
Oh, and the women who buy pregnancy tests are almost always in an extremely bad mood, but the persons who buy condoms (men as well as women) are usually pretty upbeat. No surprises there. Although I did have to train myself not to say to them, "Have a great evening". The first time I did, the man said, "I plan to".