A bodybuilding legend has a message for Miami Marlins star Dee Gordon -- KICK THE PEDS AND COME TRAIN WITH ME!!!! We spoke with 2008 Mr. Olympia Dexter Jackson -- a 5-TIME Arnold Classic winner -- who says he knows all about Gordon's 80 game suspension for PED use ... and wants to help him train…

"Dodgeball is a sport of violence, exclusion and degradation. So, when you're picking players in gym class, remember to pick the bigger, stronger kids for your team. That way you can gang up on the weaker ones" -- Patches O'Houlihan It was pure domination on the dodgeball courts in NYC today --…