Mose Allison's My Brain is my current favorite song, which I've been hearing regularly on Jazz 24. Here's an article about Allison's continuing status as a living jazz legend, even past the age of 83, which is when he wrote My Brain. And here's a studio recording. Lyrics are in the top comment by High Northerner. Here's a live version. It's all the sharper for being sung by a man near the end of his life. If Zombieville had an official song, this would be it: a gallows humor celebration of life.