What could I have said in Arabic to get rid of this hideous little boy?!?

Just got back from holiday in Marrakech (was fab). Yesterday, a boy started following me insisting on '1 dirham, 1 dirham' (money). He definitely wasn't a beggar, just an opportunistic brat. It was dusk and there were no adults around. Then he started trying to open my bag. When I shook him off, he KICKED me, very hard, on the bottom. Yeah, I know, funny now, but at the time it was horrible. What could I have said to get rid of him?!