Humorous term to refer to da one-to-ten-second "allowance-window" for performing goofy antics dat is implied to be granted to you as a "reward" or "consolation" if a certain type of minorly-distressing event unexpectedly befalls you, such as if you get accidentally bonked on da head with a rake-handle or 2X4, and thus you are "permitted" to make a huge buffoonish show of wobblingly staggering about for a moment or two, as if you've been knocked partially unconscious.
Another type of momentary clowning-around license might be if there is a sudden loud noise nearby dat presumably would allow you to raucously respond in kind --- for example, if a passing car toots its horn for no apparent reason, you then briefly have "implied permission" to shut your eyes tightly and bellow, "HAWNK!!" in "reply" to said unexpected auditory interruption.
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.