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A post of Facebook that is highly specific in nature and can only be appreciated by a small number of friends who have the requisite background to appreciate. Particularly prevalent in highly specialized communities like nerds, gamers, etc.

Complete antithesis to Vaguebooking.
My friend Julie is always esotericbooking about GOT (Game of Thrones), I need to watch the show to have any idea what she is talking about!
by Riley Amor October 23, 2015
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