Cunt.
The United States Air Force flightcap resembles the labia when viewed from the top or turned on end and has been called the "C" cap or cunt cap for years. Flightcap has become code for cunt cap and is a more subtle way of calling a person (usually female) a cunt.
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.