From personal experience, don't do this in Calis, or indeed Turkey.
You know the little joke with kids, where you put your hand to their nose, move your hand away and show your thumb between your next two fingers, with the witty line "I stole your nose"?
Well, what you are showing the child is one of the most offensive hand gestures in Turkey.
Worse still, I did it at a Fethiyespor footie match, surrounded by many Turkish men
I think they saw the funny side; I can't be sure because I ran faster than them.