Does size really matter?

Many of our male readers have asked Dr. Unc the very delicate and universal question, does size matter? 

Bob in Delaware wants to know, how much does size really matter?

Dr. Unc: True, it’s very true, size does matter! However, what defines size?
I mean, a really short penis can at the same time be very thick, and an extremely thin penis can also be sooo so long.

The couple in this picture has nothing to do with Dr. Unc ( https://pixabay.com/images/id-731890/)