When I saw this on a news site, I thought it was a joke until I went to the article. You can make out most of the note. It says, "I think I may need a bathroom break? Is this possible (illegible after that)."
I like the question mark, like he isn't sure whether he has to go or not.
This should put an end to any nasty rumors that he is illiterate.
Five minutes after this he was probably bellowing from the bathroom, "Condi, get in here!!! Your president needs wipies. And not so rough this time."