Essay here. Excerpt:

'The Bro Code is founded on three cultural mandates: Entitlement, Silence and Protection. Entitlement is rooted in the ideas of male superiority; men are in control at all times and in all situations, and always exhibit the perfect example of perfect manhood. It is also gives men the right to regain those things given up to society.

As a man, society owes me for all of my sacrifices over time, and now my payback has arrived. Silence, according to Kimmel, is one of the ways boys are welcomed to manhood. This is true when coming to terms with their own emotions, and especially true when faced with the violence of other men. Whether the violence involves making harassing statements at the Fro-Yo machine, acts of intimidation toward those outside the circle of coolness or taking advantage of an intoxicated female, the code of silence is in full force. No one confronts because no one wants to become the next person living outside the circle of coolness.
...
Upon this foundation of entitlement, silence and protection, the Bro Code reigns unchallenged and insurmountable. The specifics of the Bro Code can change depending on the particular community, but here are several consistent rules: 1) It is your right to have sex, and to do so as often as you like. 2) Always upgrade your woman when you can. 3) You must never get in the way of a Bro who is attempting No. 1. 4) Bros always before Hoes. 5) You will tell her whatever she wants to hear to achieve No. 1. 6) Never ask a women's opinion about anything sexual. 7) If there is no sexual action after so many dates, it's time to move on. 8) Men don't cry. 9) Don't get mad, get even. 10) Take it like a man. 11) Size matters. And the list continues.'