Besides people who actually use the word, "pet peeve" (including me, obviously), I have a few annoyances.
*smacking while eating
*picking food out of your teeth after a meal with your tongue (I'm talking to you, Blake)
*overall, any less-than-decent table manners
I'm not demanding Emily post standards. Just cover the basics. Make the meal enjoyable for others. We try very hard not to annoy others when we take the kids out to eat. I certainly don't want to ruin someone else's meal with the punks' less than stellar behavior.
I also clean 95% of the food they drop on the floor prior to leaving. When they were babies, this was a bigger deal.....not so much anymore. But, as a former-waiter, it would infuriate me to see a family leave and there be the equivalent of 2 plates of food scattered around the floor.
***What is on your list? What annoys you?