The tendency of a New York City resident to only judge other cities by how they compare to New York. By living in the largest grid city in their country, other cities, in comparison, seem small, spread out, slow-paced, too quiet, poorly planned, or just not like cities at all.
Friend: "So how do you like Boston so far?"
NYC Resident: "It's a quaint town, but I'm not a fan, it's just an older, smaller, less-populated NYC."
Friend: "Dude you've been living in Manhattan for five months, you can't have New York City Syndrome already."
Friend: "Look at this instagram video of Shinjuku, Tokyo, the streets look so calm and narrow with little shops and ramen places scattered around. I wanna visit so badly."
NYC Resident: "Aww yeah! It's like a tiny little New York. A cute mini city!"
Friend: "Bro Toyko is the largest city in the world, can you quit it with the condescending NYC Syndrome?"