In 1993, the American Government funded a study to see why the head of
a  man's penis was larger than the shaft. After one year and $180,000.00
they concluded that the reason the head was larger than the shaft was
to give the man more pleasure during sex.

After the US published the study, France decided to do its own study.
After $250,000.00 and 3 years of research, they concluded that the
reason was to give the woman more pleasure during sex.

Poland, unsatisfied with these findings, conducted their own study.
After 2 weeks and a cost of around $75.46, they concluded that it was
to keep a man's hand from flying off and hitting him in the forehead.