What's With Everybody Peeing In The Subway?

This past Sunday was the Puerto Rican Day Parade in NYC. This is always a fun day for the rest of us trying to get around NYC. On the subway home from Grand Central that evening, there were many drunk, loud and otherwise fanatical Puerto Ricans. As I was standing inside the subway car as it moved, I watched a (most likely drunk) Puerto Rican man standing in between the subway cars (meaning on the outside of the subway cars), as the subway was rapidly moving, peeing into the tracks all the way from 42nd St to 33rd St. This was probably the dumbest and most dangerous thing I've ever seen anybody do on the subway. Idiot.