The act of having sex with a chick and either her or you sticking 2 fingers inside her vagina at the same time as his dick; hence, it is like picking a lock.
Dude!! This chick I was fucking last night was totally 'lockpicking' herself but after a few minutes, I took over.
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.