Shakespeare Graffiti

http://www.oomsa.com/node/412

I was going to roll right past this picture of a plain old "Everytime you see a 2B you're obligated to mention Or Not 2B" joke, until I thought about the paradox.  It's graffiti.  Deliberately vandalizing the property of someone else.  With a quote from Shakespeare.  I'm curious about the sort of brain that is both capable of holding knowledge about Shakespeare and somehow lacking the bit that says "Don't do that."  I suppose the answer is that the whole to be or not to be thing is just so darned generic at this point that you don't need a brain in your head to recognize it as Shakespeare.  Whoever wrote it probably didn't even know what he was quoting, just heard it someplace.