"Penis Study" joke

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

After the results were published, Germany decided to conduct their own
study on the same 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 thatthe 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 studies. So after nearly three weeks of intensive
research and a cost of right around $75, the Polish study was complete.
The polish study came to the conclusion that the reason the head of the
man's penis is larger than the shaft is to prevent your hand from flying
off and hitting you in the forehead.