A lead guitarist walks into a doctors office. He was having some problems with his brain, especially the part that held rythm. So the doctor told him to leave his brain and he'd check it up, fix it and give it back in a week. After a month, the lead guitarist had never showed up. Then one day, the doctor saw the guitarist on the street and said "Your brain has been sitting on my desk for a month, you need to come pick it up!" The guitarist said "No, I don't need it any more, I now play the drums!"