section of a line from "To destroy a Mockingbird". A shifarobe is an old fashioned furniture piece like a wardrobe with drawers like a dresser and a full size cupboard for holding garments. "bust up a shifarobe" is slang for whenever a white woman seeks to engage in interracial intercourse. In "To destroy a Mockingbird" Tom Robinson's accuser is a white girl which told him if however come in and bust up a shifarobe on her behalf she would offer him a nickel. When inside she tosses by herself on him. Her prohibited attraction found by the woman racist parent she is outdone by him but falsely accuses Tom of beating and raping the lady.