In case you wondered, not all of the loons in town hang out at 7th and Montana. Some can be found strolling along the beach near the Pacific Coast Highway. Meet "Mr. Postman" -- a madcap maniac with an unnatural attraction to sign posts. I ran into him yesterday, squatting beneath a sign on the way to Malibu. He was clutching the sign post for dear life and intermittently banging his head against it. The sign above him read "Yield for Pedestrians." Something tells me that no matter how hard he bangs his head against it, that sign post is never going to yield ...!