in kuwait there are many things you should put in mind not to do them because they indicated disrespect and impolitness to yourself and to the people around you:
-you should not cough or sneeze straight forward while talking or eating, you should put a tissue or your hand and turn your head little away from the person infront you, or bend it little down.
- never mention any bad word while eating - even if you are with your family or closest friends - you'll be scorned if you do.
in the past:
- if you visit some one's house, you shouldn't walk in shoes on the carpets.
nowadays, our houses floors are covered with marbles, so it's ok to walk in shoes :P