The closer to the ground, hence lower, of the two anatomical features whose resident organs govern a man's decision-making; his crotch.
By metaphorical extension, a man's head is his upper house of parliament, which in some cases vetoes the ill-conceived impulses of the lower house but is can be overruled by a super majority in the lower house declaring a state of "gots-to-have-it".
A: You see that disasterBob went home with?
B: Yuuup, he definitely let his lower house of parliament decide that one.
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.