I admit, at first this bothered me to no end. Why should I be judged differently just because I look foreign?
But being the ultimate optimist that I am, I soon learned to have fun. Imagine the following scene:
Interior shot: It's a fast food restaurant. Saudi Jawa enters, wearing a pair of jeans and a Metallica T-shirt. The Egyptian clerk smiles and starts speaking in English.
Egyptian Clerk: Good afternoon, sir. How may I help you?
Saudi Jawa (in perfectly accented Saudi Arabic): وعليكم السلام أخوي. ممكن الوجبة رقم 3 الله لا يهينك (Wa alaikum assalam, brother. Can I have meal no. 3, may Allah never humiliate you?)
Pause and double take.
Egyptian Clerk (surprised Egyptian Arabic):!ده انت بتتكلم عربي حلو أوي (Hey, you're speaking excellent Arabic!)
Call me mischievous, but I just love the shocked looks I get when people get confused over exactly what I am. I once opened the elevator door for a Sudani guy and he thanked me in English and I voiced my "you're welcome" in Arabic, in a friendly attempt to inform him of my linguistic skill and preference. He didn't get the hint, or else he was just too confused. We had a whole conversation during the elevator trip where he spoke in English and I replied in Arabic! I loved it!
Another perk that has more practical merit is that when people think you're an Expat from a developing country you get better prices. Yes. Better prices. I remember the first time I came to Riyadh on business I had to stay longer than I planned to so I went to a nearby clothes store to get some extra changes. I piled my purchases in front of the Indian clerk and when I was informed of the total cost I did a half-hearted attempt at haggling (more out of habit than anything else). The clerk surprised me when he said: "Sadeeg*. You are not Saudi. Don't worry, I'm giving you the best price. I would never dream of over charging you."
To this day, whenever I'm in Riyadh and I happen to be shopping I always cheat and wear western clothes and stop speaking Arabic.
I love being a Jawa :)
*"Friend" in pidgin Arabic.