Sarah silverman sheldon adelson super

July 17, 2012 -- Comedian Sarah Silverman is making an admittedly "indecent proposal" to a billionaire Republican backer in the hopes of enlightening people to the realities of campaign financing, as well as shocking quite a few more.

In a YouTube video posted Monday, Silverman proposes that if Las Vegas casino tycoon Sheldon Adelson gives the $100 million he has pledged to Mitt Romney to Barack Obama's campaign instead she'll, well, engage in some racy behavior with him.

"If you give that $100 million to Obama instead of Romney, I will -- well, I won't have sex with you because we're not married and I am a nice girl," Silverman says in the video before naming a sex act that includes keeping her clothes on.

(FYI, it's not what you're thinking.)

Adelson, whose net worth is estimated at $25 billion, has reportedly already donated $10 million to pro-