My wife was absolutely furious when she discovered I had untagged myself from some photos she put on Facebook. I said, "They were really embarrassing!" "Embarrassing???" She screamed, "It was our f*cking wedding day you b@stard!"
Theory is when you know everything but nothing works, Practice is when everything works but no one knows why.... At work Theory and Practice is combined, as nothing works and no one knows why :)