MINYANVILLE ORIGINAL While I’m sure there will always be more businesses to be bearish on Patterson (NASDAQ:PDCO) is the third of my three little bears. It joins Tiffany (NYSE:TIF) (see Use January Options to Play Lackluster Tiffany Ahead of Earnings) and Accenture (NYSE:ACN) (see Accentuate the Negative) as part of a group of stocks that should be sleeping on the short side of your portfolio.   Patterson is in the dental business; it supplies very basic items from toothbrushes to chairs to the cotton balls that get shoved in your mouth during a visit to the dentist.  The company ...