When I saw the title, I was expecting more.. however, its not a bad shot.
I just feel it needs a litte more something something in the foreground. Its just..empty. Nevertheless, the graffiti itself is hilarious.
I congratualte you on the sharpness. A lot of peope who tend to take shots with hard lines (such as..a wall), tend to forget the importance of a perfectly sharp photograph. You show this well. I can take in a lot of the "aged" flakey wall detail.