Cute nicknames like Boy Gorge and Round Mound of Rebound followed Charles Barkley’s early thunder up NBA hardwoods. But after 14 truculent years, call him pro hoops’ mouth that roars. Now that the future Hall of Famer has announced his plans to run for governor of Alabama in 2002— he named Dan Quayle and Rush Limbaugh as mentors— prospective voters might want to reflect on selected quips from a turbulent career: