Undefeated MMA champ Ronda Rousey is defending herself against criticisms over her admission of a violent encounter with an ex-boyfriend.

Rousey admitted to the episode in her autobiography "My Fight/Your Fight," published earlier this summer. She now claims the act was a case of self-defense, and her attorneys have advised her that the incident could have been considered a kidnapping crime on the part of her ex.

"I was in that situation before when I was in a movie theater and my exit was blocked, people wouldn't let me out," Rousey told ESPN during media day for her Saturday night UFC bantamweight title bout against Holly Holm at Etihad Stadium. "You legally cannot do that. It's considered a self-defense scenario."

According to Rousey, the violent episode came about after an ex, whom she only refers to as "Snappers McCreepy," took nude pictures of her without her consent and blocked her from leaving his apartment after she confronted him about it.

"I punched him in the face with a straight right, then a left hook," she wrote in her novel. "He staggered back and fell against the door."

Rousey added the scuffle ended when she walked out to her car and her ex jumped into the passenger seat, pleading for her to hear him out.

"I walked around the car, pulled him by the neck of the hoodie again, dragged him onto the sidewalk and left him writhing there as I sped away," she wrote.

Rousey takes exception with comparisons critics have made between her actions and those of fellow fighter Floyd Mayweather, who was sentenced to 90 days in jail in late 2011 for attacking the mother of his three children.

"I don't have to make every single one of my actions idiot proof," she recently snapped. "If an idiot can't understand it, it's not my problem."

She later added, "If you find out that someone was taking naked pictures of you, then trying to lock you in an apartment, see what you do."