Don't know why I was thinking of this earlier, and I think it could be pretty accurate unless you have tiny tiny or overly massive hands. Cover the entire cock with one hand grip - Small Cock One hand grip and the head sticks out - Average cock Two hands grip and the head sticks out - Big Cock Three hands grip (if you had 3) and the head would stick out - MONSTER cock. The in betweens make up the small average, above average, and the large. Girth wise - not sure. I think a typical banana could be the "official" average of 5 inches. But looking at that I reckon the average girth is probably 6 inches. I just can't imagine anything smaller than my own. And furthermore I reckon most heads at in the 5.75 - 6.5 range regardless of shaft girth. Only you gay guys and straight girls can clarify this!!!