A sexual act that involves pulling out of your partner at the last second and quickly fisting them once. Then immediately grabbing the covers and diving under them much like a turtle shell. The final act is to slowly poke your head out of the blankets as if you were a turtle.
B: "I heard you and Jon got pretty rough last night?"
A: "Yeah , I don't know how to really describe it but it kind of felt like a turtlefoot?"
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.