2. There can be no customers for an hour, but if one car pulls into the drive-thru, there will be at least one or two behind it.

3. You're always busiest when you have the least amount of help.

4. The less people are accustomed to paying, the more accustomed they are to complaining.

5. If someone tells you a story about why they need a narcotic (or pain killer or muscle relaxant) , they're full of shit.

6. The customers that annoy you most will be the ones you end up having to do favors for.

7. If you're young or a woman, you don't know anything, especially if you're both (in customer's eyes).

8. If someone's car window doesn't work, they will come through the drive-thru.

9. If you're a pharmacy technician, you don't know what you're talking about, even if the pharamacist tells a customer the exact same thing you just told them.

10. If you do something for a customer once, they'll expect you to do it every time.

11. Handwriting courses need to be a mandatory part of medical school.

Eh... I'll think of more later.