Men want the same thing from their underwear that they want from women: a little bit of support, and a little bit of freedom.
Jerry Seinfeld is not just a funny man, but also a wise one. So what may seem like a joke is actually a very simple truth about men: they need freedom! Not because they are warriors, but because freedom is the easiest way to take your coat and leave when you want to. And he subtle suggested that. Not that men should not be free people, they just see freedom as the perfect opposite of prison. And who would chose prison? It is, as you can see, a matter of vision.