The placement of one's mouth and cheeks between another person's butt cheeks, followed by a rapid shaking of the face in a side-to-side motion accompanied by making a vibrating "brrrr" sound by blowing air out through floppy lips.
Named after motorboating, where the resulting sound that is created sounds similar to an outboard boat motor.
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.