Status competition is a huge driver of human social interactions. I’m sure there was, “Mine is fancier than yours!” “Yeah, but mine was made by a better swordsmith!” “My wife is prettier!” “Mine is a khan’s daughter!” “Mine has six sons!”
In Papua New Guinea the more primitive tribesmen (and more modern ones wanting tourist money) wear gourds over their penises. The kids have tiny gourds and the men have various-sized gourds. One older guy had a gourd 2 feet long with a string tied up around his neck to hold it in place!