Dwayne "The Rock" Johnson got in full character to destroy anyone hating his new storyline with Roman Reigns ... calling on all the "crybaby" Cody Rhodes fans to "shut your bitch asses up!!"
Fresh off his controversial return on SmackDown last week, the WWE legend joined the "Pat McAfee Show" to address his decision to get back in the squared-circle ... as well as the criticism he's gotten for seemingly stealing the American Nightmare's thunder.
As we previously reported, a TON of wrestling fans are super pissed .