Another term coined by Strong Bad in one of his e-mails. #85 to be exact.
"Revenge... Vengeance... Vengeful... Revengeanceful. This Sunday, watch as Strong Mad attempts to reclaim the title from Strongbadia heavyweight champion, the tire. TIRE MADNESS - Only on pay-per-view."
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.