"I'm only eating foods with less than 30 percent calories from fat."
Whatever. I'm getting cheese fries."
These SHOULD be obvious, but there is always that one person. Some of these you many only think about when attending a formal dinner or on a date, but you should always keep these oh-no-nos in mind.
Use your fingers!
Brush your hair or put on makeup
Eat off other's plate (Maggie)
Snap your fingers to get someone's attention (not only rude, but disrespectful)
Blow your nose
Take a phone call
Pick your teeth (this shouldn't be done anywhere in public!)
Elbows on the table
Reach across your dining neighbor for something