“You're thinking about something, and it makes you forget to talk.” 
  ― Lewis Carroll, Alice in Wonderland & Through the Looking Glass

CODE OF SILENCE

Need to know only basis only

The secret of a lifetime.

Within these Four Walls

Adults Only
Responsibility and respect.  

Family Matters

What's said here, stays here.

Friends 

Mine & Theirs
No one really knows 100% at any given time

Realtionships

Always operating on a different level.
With this inner circle knowledge, every event, good and otherwise, takes on a unique flavor. Spook = 
  • ghost, specter
    :  an undercover agent :  spy
    — spook·ish \ˈspü-kish\ adjectiv
  • Russia recalled its spooks after the collapse of the Soviet Union.>
si·lence
ˈsīləns
noun.
  1. complete absence of sound.
  2.  cause to become silent; prohibit or prevent from speaking.  
  3. A code of silence is a condition in effect when a person opts to withhold what is believed to be vital or important information voluntarily or involuntarily.