I grew up in the New York City / Long Island (Lawn-Guy-Land) area. The pizza is the best there. Ever since moving away, very few places know how to make it taste right and most people are eating it incorrectly.
I have seen most people, out of the NYC realm, just pick up a slice and eat it as is. Some people, and I find this most appalling, use a knife and fork. How barbaric!
Th appropriate way to eat pizza is to fold it in half, allow the grease to drip to your elbows, and stuff as much into your mouth as possible. Two to three mouthfuls - and it's on to the next slice!