Shawn Patrick slipped a furry silver suit over his body. A silver monkey mask concealed his face. Suddenly, he was no longer the laid-back, homeless Southerner with a raspy laugh and a shy grin. Now he was Marzipan the Classical Guitar Jukebox Monkey, ambling with ape-like movements toward Union Square. A banana rested in the tip basket that swung from one of his arms. Passers-by seemed confused. Few made eye contact.Read more at http://www.sfchronicle.com/bayarea/ci... Follow the City Exposed: facebook.com/cityexposedTwitter @cityexposedinstagram @cityexposed