Kim is a very famous television star and Kanye is a famous polka musician. After meeting in Paris at a gathering of important people they decide to fall in love and marry. Kim's mother is concerned that Kanye isn't as rich as Kim and demands a prenuptial agreement. 

Late one night after drinking heavily at the filming of a reality show, Kim's mother threatens Kanye, telling him that if he doesn't agree to a prenup, she will break his fingers (ruining his accordion playing). In front of millions of viewers, Kanye says, "O.k., o.k., cross-my-heart-hope-to-die I promise I'll never take any of your money if we divorce." 

Analyze if this is a valid contract and identify any issues.