Originating from the title of a song by Boston psychopath/frontman GG Allin that was, in fact, actually about being last in line for a gang bang. The term is somewhat uncommon, but occasionally used by people in the New England hardcore and punk scenes, where it refers to someone who is late to a trend (or late to drop it), unaware of big news or changes, or generally clueless. It can be used against oneself or a friend in a comically self-depricating fashion, or against someone as an insult.
"What? You guys are gonna meet at O'Malley's in fifteen minutes? Fuck, I had no idea... I'm always last in line for the gang bang."
"No one told you that the show was cancelled? Shit, dude, you're always last in line for the gang bang, I swear."
"Of course you're still wearing a Papa Roach shirt. You're always last in line for the gang bang, you retard."
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.