Italy recently funded a study to determine why the head of a man's penis is wider than its shaft. The study took 2 years and cost over 180,000.000,000 lira.
The results of the study concluded that the reason the head of a man's penis is wider was to provide the man with more pleasure during sex.
After the results were published, France decided to conduct their own study on the same subject. They were convinced that the results of the Italian study were incorrect.
After three years of research and costs in excess of 250,000.000 francs they concluded that the head of a man's penis is wider than the shaft to provide the women with more pleasure during sex.
When the results of the French study were released, I decided to conduct my own study. I didn't really trust the Italian or French studies.
So after nearly three weeks of intensive research and at a cost of approx $36 my study came to the final conclusion that the reason the head of a man's penis is wider than its shaft is to prevent his hand from flying off and hitting him in the forehead.