1. Passengers who take up two seats on a crowded bus.
2. Drivers who park like this.
3. Customers who pay their tab like this.
4. Shoppers who think 50 is close enough to 15.
5. Drivers who block intersections.
6. Customers who waste perfectly good food.
7. Cyclists who refuse to use the bike lane.
8. Roommates like this.
9. And roommates like this.
10. And, of course, roommates like this.
11. Shoppers who leave their carts anywhere.
12. Students who drink like this.