23. Have a very strong opinion on the best slice in the city
Doesn’t matter what pizza you think is the greatest, but you have to pick one. "I dunno, I really like the sauce at Grimaldi’s, but the cheese at Lombardi’s is probably..." shut your mouth. Shut it. Shhhh. Having strong opinions -- and strong opinions about pizza especially -- is a quintessential New Yorker trait. And if you think some place outside of New York has better pizza, you’re the reason bad things happen to good people.
24. Play dominoes outside
Park chess is for nerds and bad movies that want to show how intellectual "urban" people can be, which is offensive and insulting and stupid. Plus, slamming domino pieces against a rickety card table is way more satisfying than smugly whispering "check".
25. Have a good train story
Whether it’s a homeless man... um... loving himself, an "it’s show time!" kid kicking someone in the face, or falling asleep and waking up in Far Rockaway and being totally weirded out because, holy crap, there’s like this funny little beach town in New York City -- you gotta have at least one good MTA tale to share with friends. Because, really, that’s what the city is all about: telling your pals about that time someone really got to know his right hand on the R train.