The following was found on somebody's Orkut profile's "About Me".
And the best one for last:
The "Buffalo Theory" (from Cheers): A herd of buffalo can only move as fast as the slowest buffalo. And when the herd is hunted, it is always the slowest and weakest ones at the back that are killed first. This natural selection is good for the herd as a whole because the general speed and health of the whole group keeps improving by the regular killing of the weakest members. In much the same way, the human brain can only operate as fast as the slowest brain cells. Excessive intake of alcohol, as we all know, kills brain cells. But naturally, it attacks the slowest and weakest brain cells first. In this way, regular consumption of alcohol eliminates the weaker brain cells, making the brain a faster and more efficient machine. That is why you feel smarter after a few drinks! :)