An exlamation of extreme frustration or rage, usually used when the user has trouble coming up with a word that adequately describes said frustration or rage.
This expletive first appeared in the film "A Christmas Story", when, upon discovering that the plastic leg-lamp he won at the bowling alley had been broken, Ralphie's father shouts "Nadafinga!" after failing to find a word that would adequately express his immense frustration.
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.