Arnold Schwarzenegger: My Son Is a Not So Mini-Me (PHOTO)

Arnold Schwarzenegger's youngest son can EASILY revive "Conan the Barbarian" if Hollywood comes callin' ... just hand the kid a sword.

Joseph Baena was tossing the pigskin, shirtless on the beach in Malibu -- and the 18-year-old college student unintentionally struck a lot of the poses his father did back in the '80s.