I usually resist those click through sites that start :"10 things airline agents wish you wouldn't do" I guess I'm vulnerable today because I clicked on "15 things you do that you didn't know are rude"

Ha Ha -- this one really gets my goat! It's rude to raise your hand to get a waiter's attention??? Puh-leeze. Catch their eye? How? Who makes these things up? Here's the description: It's RUDE to do this?

Flagging Down a Waiter or Bartender

Everyone knows that snapping your fingers and saying “garçon!” is the epitome of being rude at a restaurant, but that's not the only way you can annoy your server without even knowing it. Raising your hand in any manner, whether it's to sign for a refill on your Diet Coke or waving the signature for your check, is rude. If you want your waiter's attention, just try and make eye contact. They'll notice you.