http://www.utne.com/mind-and-body/what-makes-a-man-zm0z13mazros.aspx

The Famous "Man Box"

As I was growing up till now I never knew there was a such thing called the “man box” I tough the rules of the MA box was a regular thing that a man should do. Then when this was presented to me, I saw that this is something that was tough for us from a young age. Like if something happened an that you cry he's going to tell you stuff like “man up” or “man don't cry” and much other stuff.