1. chewing with your mouth open.
2. speaking with your mouth full.
3. picking teeth/sucking teeth.
4. elbows on the table.
5. spitting food(bones,skin,etc.)out of your mouth.
6. picking up your plate or bowl.
7. speaking loudly.
8. passing gas/belching/burping.
9. cleaning ears with fingernails.
10. smoking.