Silver Surfer is a MAN.
Check out this screencap of Silver Surfer's junk, courtesy of Towleroad:
As the article says:
"American fans recently got their first glimpse of the trailer for the upcoming film Fantastic Four: Rise of the Silver Surfer, and some meticulous trailer-diggers have revealed that the animators may have inserted a secret frame — what video game developers would call an 'Easter Egg' because it's hidden — in a scene in which the Silver Surfer is being pursued through a tunnel."
Would it not be cool if he was hung like this for the whole movie? Somehow I don't think that's going to happen.
I salute you and your shiny package, Norrin Radd!