You can't say John Mayer doesn't have the patience of a saint - and a sense of humor! After being spotted by an autograph hound outside of Mr. Chow's on Friday night, the singer made sure everyone watched as he signed his name and negotiated $30 out of the guy for the signed photo that was probably headed straight for Ebay! But seeing as how we caught him sneaking out the back door at Hyde a few hours later, we're betting that that money's long since spent!