Try wearing one of these "I AM NOT A TERRORIST" (in Arabic) t-shirts at the airport, cross your fingers and hope the airport authorities do not stop you. It would be funny if they do, and then you try to explain to them what the word in Arabic really means. I reckon, they will then look for an Arabic translator to find out what's written on the t-shirt. Ha! Ha! Ok seriously, don't do it unless you want to miss your flight.
(Thanks Lord Kimbo)