Generally referring to someone who is excessively undesirable or trashy. Many liken the description to a street person or prostitute.
May also act as a verb "shanty bag of rags blowing in the wind".
So yeah, did you smell that girl with the tattoo?
Yeah, what a shanty bag of rags.
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.