UPDATE:
Michelle has offered to pay Obama $200 for the “lipstick on a pig” comment – see below for details of the couple’s ‘word game’ this campaign season! This most recent dare had Michelle Obama betting her husband, Barack, that he wouldn’t dare refer to Sarah Palin using “you can put lipstick on a pig, it’s still a pig”

On Sunday, Barack Obama won a bet from his wife Michelle Obama over whether he would use the phrase “my muslim faith” before the month of September ended.

“It was a challenge she presented to me, and I was up to it. Listen, I knew it would freak everyone out, but that’s just something we like to do!”
The presidential candidate pointed out that the couple has an ongoing game, daring each other to say outlandish things in the press during the campaign. The biggest prize was a $100 bet that Senator Obama lost when he challenged his wife to say “for the first time in my adult life, I’m proud of my country” earlier this year.
“She did it and I was all ‘I can’t believe you said that’ and she was all ‘believe it, brother.’ We love these games.
Other phrases that the couple dared each other to use include:
August 2008: “Who gives a shit about Canada?” (Michelle dared Barack to say this, which he didn’t, losing $15)
May 2008: “I drink too much” (Barack challenged his wife to use this at rally and she did. The media failed to report it and Barack had to shell out $50).
January 2008: “Is it hot in here or is it just me?” (again, Michelle challenged Barack to say this during the primary debates. Barack chickened out, and paid her $25).
All told, Michelle is up several hundred dollars in their little parlor game. The couple confesses they will continue the game through his presidential term, should he win.
“I’m going to win – it says so in the Koran.” Obama said, and laughed, acknowledging that last line will earn him $75 from Michelle.