The transition area between gluteal cleft and buttock. An area that is not definitively crack or cheek.
A pubic louse in the in the butt-crack of murdered prostitute lying naked, face down, in the middle of the street at dusk would observe the sun to set over the cleftal horizon.
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 $2 million.