One of my favorite pieces of graffiti ever. Because of a great high school history teacher (thanks, Ari!) I know that the phrase, "Mene Mene Tekel Upharsint" is the original writing on the wall. Literally this is a reference to currency and weight, though it is usually taken to mean, "you have been weighed and found wanting". What it means without the Upharsint, I have no idea.