The Penis Study Several years ago, Great Britain 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 more than $1 million. It concluded that the reason 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, the French were convinced that the results of the British study were incorrect. France decided to support its own study of the same subject. After three years of research at a cost of in excess of $2 million, they concluded that the head of a man's penis is larger than the shaft to provide a woman with more pleasure during sex. When the results of the French study were released, they were widely criticized in Canada. The Canucks didn't really trust either the British or French studies. Canada decided to support its own study. After nearly three weeks of intensive research and a cost of right around $75.00, the Canadian study was complete. It concluded that the reason the head on a man's penis is larger than the shaft is to prevent your hand from flying off and hitting you in the forehead.