Our favorite construction in the Turkish language (other than the brilliant "miş" tense, which allows one to disassociate oneself from the information one is relaying) is designating an occupation by adding the suffix -ci/-cu/-cı/-cü to a noun. By using this construction, you create a new word that means "guy who does X" or "X guy" (and it is always a guy, though the word itself is gender neutral).
There is no occupation too small or insignificant to warrant a "-cu" ending. For example, our new favorite word is "buzcu" (booze-joo) or "ice guy." In fact, we just discovered the existence of buzcular, which doesn't make a lot of sense. If there are yağcilar (olive oil guys), karpuzcular (watermelon guys), turşucular (pickle guys), hurdacılar (junk guys), tavukcılar (chicken guys), balıkcılar (fish guys), a davulcusu (Ramazan drummer guy) of course there will be buzcular. Turks are logical like that.
In Istanbul, you can't just go to your local market guy (your bakkalcı) or even the Carrefour for a bag of ice for a party. They don't sell it. You have to go to Buzcu Sokak Now, there is no such alley, as far as we know, called Buzcu Sokak*, so don't go asking around for it (and we're sure it's probably accusative too, but, seriously, we've stopped even trying). But since Turks also tend to name alleys after the types of businesses and the -cis clustered there and we don't know the actual name of the street, it's become known as Buzcu Sokak in the parlance of the day.
That doesn't mean there's not some mystery associated with the buzcular. Most of the buzcular on Buzcu Sokak are also çamaşırhanes (full service laundromats. Someday we might explore how putting the ending -hane to a noun means "place."). We cannot explain why the çamaşırhanes and the buzcular are the same enterprises, but it makes them easy to find. We're also not at all sure why all the buzcular we've seen are also çamaşırhanes but not all çamaşırhanes are buzcular. We're pretty confident that someone will explain this all to us.
*Buzcu Sokak runs parallel and in between Tarlabaşı Bulvarı and Nevizade/Balık Bazaar, if you need ice this weekend.