Former boxing champ Mike Tyson once impregnated a prison official while serving time behind bars.

The retired sportsman has been revealing all about his controversial career and personal life as part of a one-man stageshow, titled Mike Tyson: Undisputed Truth, which recently debuted in Las Vegas, but there was one interesting topic from his time behind bars that he left out.

In a TV interview with ESPN's Rick Reilly, Tyson fails to state when exactly the incident occurred, but reveals the prison employee terminated the pregnancy soon after their encounter.

He says, "I didn't talk about getting a prison official pregnant. Oh yeah. In prison, stuff happens. But she had no baby."

Tyson, who is a father of eight, served three years of a 10-year sentence for rape in 1992.