I was trying to make good time on my way home from work yesterday. I heard the whistle of that 5:00 train that is forever trying to block my way home. I thought I would beat the train on 41st street, but it won. Since it was moving slow, I spun around real quick to try and beat it to the 43rd street crossing. As I turned down 1st avenue, I heard the distinct sound of my tire being impaled and then the dreaded slow hiss. I found a cozy spot just next to the recycling plant and began to unpack and disassemble. The first thing I noticed was the flattened cat, just noticeable in the background of the picture of my bike upside down. I hoped this was not some kind of omen, and kept working. The next thing I noticed was the ridiculous size of the nail that was embedded in my tire. It was buried all the way up to the head, so I didn't notice until I pulled it out, that it was roughly 3" long. I pressed on. After I got everything changed, and the tire inflated, I pulled the pump off and ripped the top of the presta valve off. I don't know what that part is called, but it is the little thing you screw down so that the air won't come out. With it came part of the little metal part that keeps the little screw down thing connected to the rest of the valve. I thought, or maybe said out loud, several things I don't remember. It wasn't actually leaking, or at least I couldn't hear it, so I screwed the cap on it, packed up and hit the road while there was still air in the tire. I made it to the 43rd street crossing, and yes, the friggin' train was stopped there blocking my route. I finally made it home, and by the end of the evening, all the air had leaked out of the tire. I couldn't bring myself to change it again, so I'm on four wheels today. Oh yeah, and I found a golf ball while I was changing the tube.