It's a situation all too familiar. Your parents taught you how to walk, eat, drive and in most respects fend for yourself -- with one key exception. They never taught you Arabic.
This shirt reads Ahli maa alamooni arabi -- My parents never taught me Arabic.
The writing is by master Arabic calligrapher from a concept by David Malki. For the curious, the non-calligraphic version of the text is: