Ha ha.

A salesman for a cola company is given a Middle East assignment, but he returns disappointed.
A friend asked, "Why weren't you successful with the Arabs?"
The salesman explained, "When I got posted in the Middle East, I was very confident that I would be able to make a good sales pitch as cola is virtually unknown there. But I had a problem -  I didn't know how to speak Arabic. So I planned to convey the message through 3 posters. First poster, a man crawling through the hot desert sand... totally exhausted and panting. Second poster, the man is drinking our cola and third poster, our man is now totally refreshed. Then these posters were pasted all over the place.
"That should have worked," said the friend.
The salesman replied, "Well, not only did I not speak Arabic, I also didn't realise that Arabs read from right to left".