UPDATE: You can now view the video at this post.
WhiteHouse.gov:
Q I seem to remember a time in Texas on another problem, taxes, where you tried to get out in front and tell people it's not a crisis now, it's going to be a crisis down the line -- you went down in flames on that one. Why --NOTE: Terry Moran of ABCNews says Bush was joking about the reporter's poor memory, i.e., this was an Alzheimer's joke, or at best, a senility joke.
THE PRESIDENT: Actually, I -- if I might. (Laughter.) I don't think a billion-dollar tax relief that permanently reduced property taxes on senior citizens was "flames," but since you weren't a senior citizen, perhaps that's your definition of "flames."
Q I never got my billion --
THE PRESIDENT: Yes. Because you're not a senior citizen yet. Acting like one, however. Go ahead. (Laughter.)
Q What is there about government that makes it hard --
THE PRESIDENT: Faulty memory. (Laughter.) Go ahead. (Laughter.)