The full news article here: http://apnews.myway.com/article/20080809/D92EQ1S02.html
But here's an excerpt from it:
Then May-Treanor turned her back to the president, offering her bikinied rear for one of the traditional slaps that volleyball players frequently give each other.
"Mr. President, want to?" she asked, repeating an offer she made when Bush gave a pep talk to the U.S. athletes before Friday's opening ceremonies.
Bush smilingly gave a flick with the back of his hand to the small of her back instead.