When you go to open a door, and either it is locked and won't open, or it is a door with a bar and you push on the wrong side of the door and it won't open for you. Like getting Owned by a door.
*Guy goes for one of two doors and pulls the door that is locked*
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.