Why Is The Penis Head Larger Than Its Shaft? Published by xblogger May 14th, 2008 in General. In the year 2000, the University Malaya did a study to see why the head of a man’s penis was larger than the shaft. After one year and RM200,000.00, 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 Universiti Sains Malaysia decided to do their own study. After RM500,000.00, and 3 years of research, they concluded that the reason was to give the woman more pleasure during sex. Nilai College, unsatisfied with these findings, conducted their own study. After 2 weeks and a cost of around RM50.00, they concluded that it was to keep a man’s hand from flying off and hitting him in the forehead.