Dixit = is a short word to indicate:
"An in joke."
"You really had to be there."
"You'll have to take his word for it."
"Not everyone will 'get' it"
"Not everyone will be at that level of
understanding"
"
Understanding this concept may require insider, mysterious, enegmatic, esoteric knowledge"
Dixit is that concept of what someone means when they tap their nose suggestivly or give a knowing wink.
Sources:
Mixed roots:
The Latin DIXIT meaning "He Said"
The Sankrit DIKSHITA meaning "Initiated one"
Also the name of a card game DIXIT where the object of the game is to tell a a story obliquely so that only a SOME players will get the answer, and purposely leave other players
in the dark.