Burping in Turkey and Saudi Arabia are perfectly fine. They serve as a compliment to tell others that food was exceptionally good.

In the Middle East, you always greet people with your right hand. Greeting with your left hand is considered an insult, for the left hand is only used after using the restroom.

Asking for salt or salting your food in Egypt is considered an insult. The chef prepared your meal with a certain taste, so you shouldn't alter it.

When in India, do not eat with your left hand. It is considered impolite and disgusting, as the left hand is used for wiping after using the bathroom.

Some countries as Greece, Turkey, Bulgaria, Ukraine, Egypt, plumbing may not be designed to flush the toilet paper. So beware the next time you decide to flush the tp.