This thread reminds me to my two brothers. The older one was in our childhood always very nasty and cheated us a lot. Expecially my younger brother. One summer we went with our family to France, where we stayed at a nudist beach. I was 11, my younger brother 10 and the older 14, but we refused first to get naked, until our mum convinced us that it was normal. And when the both boys dropped their pants, it was really amazing, that the younger one had a least twice the size of the older one. He was not expecially big, but the older one was really tiny. He got really calm, and from this moment on, he stopped cheating the younger one in that nasty way, who was very proud and pointed out always out that he was bigger. There I recognized how important the size for the self esteem of a guy is.