Many fighters have learned the hard way that it is never a good idea to make Ronda Rousey mad. Actor Ken Jeong found that out during an interview with Rousey on ESPN's "SportsCenter" Wednesday, but fortunately for Jeong he wasn't physically in the studio with the UFC fighter.

Rousey, 28, joked with Jeong, 46, that she's been waiting to run into him since the ESPY's on July 15 when he spoiled "Game of Thrones" for her. "I'm on the third 'Game of Thrones' book and you seemed to think it was hilarious to ruin the fact that Jon Snow dies in the last season and I was really upset about that, I was supposed to be happy about winning things that night," Rousey said.

Rousey glared at the camera and Jeong pretended to start crying out of fear for making the champion fighter angry. "I know we're via satellite but I am so scared right now," Jeong said. "This is not what I signed up for."

Towards the end of the interview, Rousey asked that he refrain from spoiling anything else. If he didn't she said she would go find him and "shank" him with her pen. Jeong ended the segment on a serious note, complimenting Rousey on her charisma and comparing what she's doing with her acting career to that of Dwayne "The Rock" Johnson, when giving acting advice to the fighter.

Rousey has had a busy acting career as of late after appearing in "Furious 7" and "Entourage." She is also confirmed to star in a remake of "Road House." 

Watch the full video of the interview below:

Jon Snow was killed in the "Game of Thrones" Season 5 finale when his fellow brothers of the Night's Watch turned on him and stabbed him repeatedly for showing sympathy for the Wildlings. Many fans refuse to believe Jon Snow is dead and feel he could come back as whitewalker or even be revived by the Red Woman, Melisandre (Carice van Houten).

Despite Jeong spoiling what happens on "Game of Thrones," fans of the show and books, like Rousey, have a reason to be excited for Season 6. Kit Harrington, who stars as Jon Snow, was spotted in costume on the set of the upcoming season. Season 6 is expected to air on HBO in 2016.

Rousey will next appear in the octagon on Nov. 15 when she defends her Women's Bantamweight title against Holly Holm.