Several years ago the United States funded a study to
determine why the head of a man's penis is larger than
the shaft.  The study took two years and cost over
$180,000. The result of the study concluded that the
head of a man's penis is larger than the shaft to provide
the MAN with more pleasure during sex.

After the results were published, Germany decided to
conduct their own study on the subject. They were 
convinced that the results of the US study were 
incorrect. After three years of research and a cost in
excess of $250,000,they concluded that the head of a man's
penis is larger than the shaft to provide the WOMAN with
more pleasure during sex.

When the results of the German study were released,
Poland  decided to conduct their own study. The Poles
didn't really trust  the US or German studies. So after
nearly three weeks of intensive research and a cost of
right around $75, the Polish study was complete. The Polish
study concluded that the reason the head of a man's penis is
larger than the shaft is to prevent your hand from flying 
off and hitting you in the forehead.