It is a cross between anal-retentive and professional. It is when someone takes the notion of being "professional" to such an extreme that it becomes a hindrance and makes them look like a total douche.
"Why does Chris want me to rewrite that memo again? He is so analessional, I already rewrote it five times."
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.