A Quentin Tarantino adjective used to describe the atmosphere in 50's themed diners (like Jack Rabbit Slim's in Pulp Fiction.) Could be used in the same way as "it's hellapoppin' in here."
"Vincentdigs into his Douglas Sirk steak. As he chews, his eyes scan the Hellsapopinish restaurant."
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.