A fact checker's dream: The president made a mistake on the age of his own daughter at Wednesday's news conference.

While chiding Congress for delay in increasing the nation's debt ceiling, Obama said, "you know, Malia and Sasha generally finish their homework a day ahead of time. Malia is 13, Sasha is 10."

Whoops -- Malia is still 12, though she does turn 13 on Monday, July 4th.

We guess the president -- who repeated the number 13 a little later -- can't wait for his eldest daughter to become a teenager.

As the Associated Press put it: "They grow up so fast. But not that fast, Mr. President."

Here's Obama's full riff on Congress, his daughters, and the standoff over a budget deal: