Maybe he was educated in the States
I searched a bit online today, and it as far as I can tell he was not educated in the states. He did go to school in India, which I found interesting. Also, his father was murdered, probably by the Taliban, which I don't think I had heard before. He obviously has used his English with some Americans to have learned that colloquialism. I am assuming that is an American expression--or am I wrong? Do you use that, Snugs? Here in the south, they use "y'all" and not "you guys." (At least for the most part.)