Okay, these are things that I've noticed.
1. An overwhelming number of people parked in handicapped spots with Bush/Cheney bumperstickers.
2. People expecting me (the library) to supply them with office supplies. Sure, you can use the stapler. But why are you using my stapler to staple 100 reports? No, I don't have unlimited amounts of tape, glue, rulers, paper, markers, highlighters, pens, pencils, or three hole punches.
3. Parents completely unprepared for Summer vacation. Um, did you not know that they were finishing school? What makes you think that I am going to babysit your 6, 8, and 11 year olds? You didn't give them any money? And did you know the nearest store is half a mile away? I'm not going to feed your kids. And believe me, I'm not going to parent your kids either. Neither is my staff. I give you ONE warning. The next time you do this, I'm calling the cops. They'll come and pick up your little darlings. And you can explain to them where you were. Believe me. I've done it before.