I was working in Bahrain and a couple of guys in the office were trying (without success) to teach me Arabic.

One day Hussein said to me "Say 'Fetchek Abd'"
After a few tries I was able to pronounce it and asked him what it meant. He wouldn't tell me and went home.
Well, not to be deterred I asked the only other person around. That was Bilal, a black Bahraini, VERY black, you know, one who gives real meaning to the term 'black is beautiful'. Bilal just rolled over laughing. It means "Go and get fucked by a blackman". Was my face red!!!

Fortunately for me he was a happy little man and not a big mean one, so I'm still alive to tell the story.

Bert.