Please do not generalize; I'm from Egypt, so in way I’m Arab, and we do not do that.
Generalizing a rule based on nationality is very wrong and only proves how ignorant you are; unless you ready did a search covering all Arab countries, which I really doubt.
Please try to be a little specific next time to avoid disturbing others
If you have any inquiry about Arab; I would gladly answer your questions. Other are welcome to ask and will try in my best effort to answer, hopping to clear some of the misunderstandings.

Regards