Yes we can? Barack Obama wasn't sure at first.

The President initially blanched when his now-famous campaign slogan was first introduced by political guruDavid Axelrod during the 2004 Illinois Senate race, a new book reports.

"I don't like it. Come on," Obama was quoted as saying in "Barack and Michelle: Portrait of an American Marriage," by author Christopher Andersen.

Obama felt the catch phrase was "childish" and "corny," and even asked his staff to find something else - until his wife, Michelle, convinced him otherwise, the book reports.