It was Mark Twain who said "truth is the most valuable thing we have, so I try to conserve it." It can also be very profitable, just ask a former boxing star.

Mike Tyson's one-man show "Mike Tyson: Undisputed Truth - Live on Stage" lasted only six days at the MGM Grand in Las Vegas last month, but that could be just the tip of the financial iceberg.

Tyson reportedly has three offers about taking his act to the bright lights of Broadway. The Las Vegas Sun reports one of the offers is from a "major director" who's interested in a movie project based around his life story.

At the same time Iron Mike could have two more runs of "Undisputed Truth" at MGM in Vegas this year.

Tyson has already been booked for yet another cameo appearance in "The Hangover, Part 3." The popular film series has earned over $1 billion worldwide with the final film set to hit theaters in May 2013.

Robin Leach of the Sun reports Tyson will be recruited to join the cast which includes Zach Galifianakis, Ed Helms and Bradley Cooper as they attempt to break a buddy out of a mental hospital.

In any event, Tyson needs the money. "I always need money. Even when I had money I needed more money. I’m terrible with money," he told the Daily Mail recently.

-- Follow Ben Maller on Twitter @BenMaller.

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