In Turkey there are some pretty insistent scammers who won't take 'NO!" for an answer. For example in Istanbul I lost the chance to make a new 'friend for life' when I refused to have tea with him at his relatives shop. My loss, of course, since his cousin lived in New York and was president of the World Bank. Imagine the opportunities I passed up. :-)
Then there was the shoe shine guy who dropped his brush on the street and when I returned it to him he insisted on giving me a 'shine' and could not believe I would not want it. Of course, at the end, he told me the story of his child who needed medical care.... blah, blah, blah.... So be careful about returning dropped items and just keep walking if you don't want a freebie, new friend, or other goodie.
However, as one person used to say "Wash your ears out with this." On two occasions, I left stores without bothering to scoop up my change. My fault entirely. The clerks followed me down the streets and returned the money that I had left behind. 99.99% of the Turks are great people.