In 1993, the University of Kentucky did a study to see why the head of a man's penis was larger than the shaft. After one year and $ 80,000.00, they concluded that the reason the head was larger than the shaft was to give the man more pleasure during sex.
After the study was published, the University of South Carolina decided to do their own study. After 0,000.00, and 3 years of research, they concluded that the reason was to give the woman more pleasure during sex.
The University of Georgia, unsatisfied with these findings, conducted their own study. After 2 weeks and a cost of around .46, they concluded that it was to keep a man's hand from flying off and hitting him in the forehead.