Top 11 reasons Dubya will have his knees examined.

Top 11 reasons Dubya will have his knees examined.

11. They've already examined his head and found nothing.

10. If the aqua-jogging pictures get out, he'll be former President Bush before you can say "water-wings."

9. It's sort of like University of Michigan center (and former President) Gerald Ford's knee injury, only from cheerleading at Andover Academy.

8. Researchers think that the Bush knees are the key to keeping one's head up one's own ass.

7. Pharmaceutical industry promised him he could get "bionic makeover" like the Six Million Dollar Man.

6. Rove insisted: Dubya on an elliptical machine is a bad political metaphor.

5. Running on concrete in 100 degree heat isn't stupid, it must be the knees' fault.

4. Pain and stiffness make it difficult to count beyond 10.

3. Device that increases his height for photo ops has jammed (see Growth In Office Top 11 list).

2. It's just a cover story to explain why he falls down so often.

1. Halliburton and Bechtel are complaining about the service.