I walked out of the gym yesterday and this nicely dressed man totally lets the door slam in my face. After saying "Thank You", common courtesy #2 taught in my parents' home was to always open doors for others.
This one hits hard.
Dear Smoker, Please do not stand by the door of an entrance, in a line, or sit by me smoking your cancer-causing drag.
I know this is way gross, but I have been tempted to go fart in these people's faces and wait for them to get mad at me so I could tell them how I feel about smelling their crap.