I used to hit the 7 train back in the day. A couple of rooftops and some handball courts as well. There was one time we just finished a handball court and were on our way home. The train we got in had two cops on it. We had one bag each full of spray cans and our hands were covered in paint. The cops starred at us till we got to flushing (last stop). As soon as the train stopped we ran out. The cops gave chase but not after us. Turns out we werent the only writers on the train. They were chasing some kids who were out tagging. We recognized them that's how we knew what wa going on.
Then there was another time when some guy saw us running across the tracks on the el (elevated tracks) above queens blvd and for some reason starting shooting at us. Back then we laughed it off and just kept running (we were running from the cops). I was lucky because I never settled with one particular graffiti crew. I was always hanging out with a different crew. That way you covered more ground and you learned more. At one time I had tags running on the A train which is the longest line in the NYC subway system. From Uptown Manhattan to Rockaway Beach. Met alot of writers on that line. Especially at the layups (parked train cars).
I think my old high school had the largest amount of writers. We had guys from the Bronx to Brooklyn from Queens to Manhattan. Aviation High School was in Long Island City which was in the middle of everything.
I still make a mop (fat marker) once in a while. I havent gone bombing (tagging) since the late 80's since then i've become a paper king

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I hope graffiti never dies.