In 1993, the American Government funded a study to see why the head of a penis was bigger than the rest of it. After one year and $180,000 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. After $250,000 and three years of research they concluded that the reason was to give the woman more pleasure during sex.
Poland, unsatisfied with these findings, conducted its own study. After one week and a cost of $12.50 they concluded that it was to keep man's hand from flying off and hitting him in the forehead.