My favorite thing is when parents bring their small children to a nice restaurant. Now, I realize there ARE well behaved kids out there... but, when your child is WAILING at the top of their lungs, and you think that ignoring their cry for attention is going to do everyone a world of good then YOU can pay for MY meal.
Or, better yet. I was sitting with a friend in a movie theater before seeing an R-rated movie. I occasionally curse in day to day conversation. Sitting next to me was an 8 year old.
I think I must have said the F word because his mother GRABBED my arm and told me to watch my mouth around her child.
Sorry to get off topic... some things just make me mental.