Agreeing with someone just to be nice when you don’t really mean it.
As in you meet an old lady on the beach and she asks if she helped hold the door while you carry in pizza boxes and you agree even though you haven’t had pizza in a month.
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.