President Barack Obama escaped banishment from the marital bedroom by signing the Healthy, Hunger-Free Kids Act of 2010 on Monday, and delivering on an issue that his wife has fought hard to advance.

“Not only am I very proud of the bill, but had I not been able to get this passed, I would be sleeping on the couch,” Obama joked at the signing ceremony at the Harriet Tubman Elementary School, offering a rare, if humorously intended, glimpse of the presidential marriage.OBAMA/

The first lady, who has led a White House push to get American children eating better and exercising more, played along with the joke, but said, “all kidding aside, my husband worked very hard to make sure that this bill was a priority in this session.  And I am grateful to you.”

At which point Obama chimed in, “because I would have been sleeping on the couch.”

Michelle, hesitating to allow the conversation to intrude into such delicate territory, conceded she did not have to deploy the couch option.