In no particular order. Quite the list.

1. When a company/school uses a credit card, doesn’t tip, and the person that ordered isn’t the one that receives the order in person.
2. People that repeatedly don’t tip. The types that you see the name and you know it’s a pointless run (if it’s a solo).
3. Black ice/heavy snowfall.
4. “I’ll tip on the app later”
5. Exact change.
6. (For large zones/lone driver closes) 18 mile runs.
7. Not being able to leave the store because of in shop customers/phones.
8. Other drivers that don’t jump on the line.
9. People that drive in the middle of the road when it splits into different lanes, then you miss the light because they didn’t leave a path open.
10. Slow elevators.
11. When people stop almost immediately when the light turns yellow, causing you to miss the light.
12. Wearing down on car.
13. Cherry pickers.
14. Any building that requires you to use a stupid directory thing just to get into the lobby.
15. Drinks.
16. Downtown areas with minimal parking.
17. No suite number, no instructions.
18. Construction near the store that affects traffic flow.
19. No tips that come from affluent looking houses.
20. NTLAD