Josh's political campaign idea with "65 million years ago an asteroid hit the earth and the collision resulted in the extinction of the dinosaurs. How could this happen? WHERE WAS JOHN KERRY?" is the same as it was in the "Did Kerry kill Jimmy Hoffa" thread, which he also started.
The idea is that you're supposed to think that any post that might cast a negative light on the canidate of his choice is automatically as invalid as those two examples. It's like Dave K.'s calling anything negative about Kerry "smear tactic".
It's kind of like "perventave damage control", similar to the idea put forth by others more than once that Bush already has bin Laden so that if he is captured, the groundwork fot the "plot" accusation that will arise is already established.