Ryan Lochte -- I'm Trademarking My Dumb Catchphrase ... JEAH!!!

Ryan Lochte -- I'm Trademarking My Dumb Catchphrase ... JEAH!!!: Ryan Lochte's annoying catchphrase "Jeah!" is a friggin' GOLD MINE -- at least that's what the swimmer believes ... because he just filed docs to lock up a trademark for the made-up word.According to the trademark docs,  Ryan wants to use the…