miss manners

so, while waiting for some take-out lunch today, i watched as a woman, eating with two other women, pulled out a thing of dental floss which immediately made me think, "nah ah! no you are not going to floss your teeth while one of your companions is still eating her meal! where are your manners?" but then i had to take back the "where are your manners?" thought because she did offer dental floss to her dining companions before proceeding to floss her teeth at the table. carry on!