If thats what makes you sleep at night- Commonly used phrase to make peers nearby laugh. But mainly it means what your trying to say is impossible and would never happen.
Kid :"DUDE I CAN DUNK NOW"
Other Kid: "Yeah if thats what makes you sleep at night."
Other kids: "BHAHHAH"
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.