They could have a scene in Jabba’s Palace right before Luke gets there where they show the outside of a bathroom door and one of the Gamorrean guards wanders up and opens the door, and Jabba is in there with his hand buried somewhere in his folds of fat and he says, “What are you doing? Close the door!”
Then a few moments later the door opens again and Jabba wipes his hand on the wall then reaches down and lifts the edge of his fat up like someone would lift a skirt, and there’s two huge feet under there and then he comes walking out to the main room.