An exclamation, typically of surprise, accompanied by a look you would expect when taking a fit bird home, only to discover she has a pair of hairy holes.
In politer terms may be stated as 'You're joking!'
Jimmy - "Awright Boaby, saw yer Maw up the toon the day"
Boaby - "Fair play to you - whit wis she doin?"
Jimmy - "Having her flange waxed"
Boaby - "Hairyholes!"
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.