South Door Clip
While there are Bungees for 3 out of the 4 Cardinal doors, the South door does not have one. Instead there is a sock which is intended to be reached by Sandy. This can be avoided though by clipping through. Start by ledge grabbing the top of the door frame. From here, fall down the side and perform an L-Bowl. This causes Spongebob to go through the wall and reach the sock.