1.) lying on one's stomach in prison; especially on a bed, cot, bunk, mat, or any other furnishing-- so that the removal of one's boxers is the only thing that must take place before an anal rape may commence.
If you are in prision and you drop yousoap and you bend down to pick it up you are in the ass rape position.And are in danger of being ass raped. So if you are in prision do not pick up your soap.
