The period of time after a set time at which it is no longer socially acceptable to call someone. Usually around 9-10 o'clock. Only to be violated in periods of extreme urgency. Originally coined by Larry David on, "Curb Your Enthusiasm"
Person 1: Oh shit, I forget to tell my friend that he has to meet me at noon tomorrow.
Person 2: Too late now, it's past the cutoff time.
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.