A person who is a walking encyclopedia of questionable facts. Someone who is mostly believable, and knows several details of an idea, but misses context or has misplaced context. An intellectual grazer. Typically very attractive, and when wrong they still have their good looks.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2million.