1. Wait at a green light until it turns orange, then go through at the very last minute so the car behind you has to wait for the next green light.
2. Use all but a tablespoon of the milk and put the carton back in the fridge.
3. Ask someone if they've been sick, because they look really, really tired.
4. Don't change the empty toilet paper roll.
5. Ask someone if they got a haircut, but don't add "It looks good" or anything complimentary like that.
6. Insist that you get the last piece of pizza, then take two bites off it and throw the rest away.
7. Turn your music up so loud that people can't talk over the top of it.