These aren't the only things that make my hair stand on end and push me toward "saying something," but they're high on the list:
1. Very bad language spoken loudly in public where sweet little old ladies and young children might overhear. This morning, sitting outside at a table in front of Starbucks, a 30 something gal practically yelled her extremely offensive profanity. For Pete's sake, folks, have a little respect for others and tone it down in public.
2. Bizarre clothing, multiple piercings, and pink and green striped hair on a teen who then gets huffy if I stare. Why do people appear in public like that if they don't want to attract attention?
3. Getting the door of the library shut in my face when I'm walking in with an armload of books. It's not that hard to glance behind, and it's lovely manners to hold the door open for others.
4. Waiting to make a left turn when the arrow has turned green and the person in front of me is daydreaming or distracted by something else going on in her car. And yes, it's almost always a female. I usually tap my horn, but what I'd really like to do is hold it down and scare the living daylights out of her.
5. Trashing anyone or anything in a public forum (and these days there seem to be no private forums). Writers who attack agents or whine about their rejection letters in their blogs are a good example. Professionals in any field should know better.
What about you? What really ticks you off?