When you get fed up in an (usually upscale) store waiting too long in line or for a salesperson to help you out, you say this while exiting the store. You are calling the store inferior.
after 20 minutes looking for help or at a register:
C'mon man, Screw this Taco Stand, I get better service at Wally World.
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.