A term used in a work-in-progress Animan Studios animation which just like their others, is just animated gay porn.
The clip in question is of a white boy performing anal sex on an older gentleman, whom while being fucked, asks for any more people to "service his dad pussy". Since they did it in their yard, 2 men watch from the fence.
"Any more of you horny fellas need to service my dad pussy? It's warm and it's wet, and it's waiting for you."
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.