Maybe not humor, but it is about chickens. Everyone here loves chickens!
The AKA 47 was there to keep the predators away from the working chickens. Why were the chickens there? Certainly because they couldn't cross the road! No, actually, I know why the chickens were there. They were busy doing what chickens do and making the explosives in back of the SUV . . . as in chicken manure + ammonia = explosive material.
If they had stopped the driver before he got more than a mile or so, there'd have been no explosive material in the SUV yet.