An ad-verb describing someone who never seems to be taken advantage of, or always ends up on top, or never has bad things happen to them, or is prepared for a quick and painless recovery if in some way, they were to be finessed.
Guy 1: dude, Jeremy's fake got taken last night at the bar!
Guy 2: yeah I heard. He's screwed.
Guy 1: no he's not, he had a backup in his glovebox and just went to a different bar.
Guy 2: man, this guy is unfinessable.
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.