Part of a line from "To Kill a Mockingbird". A shifarobe is an old fashioned piece of furniture similar to a wardrobe with drawers like a dresser and a full length cabinet for hanging clothes. "bust up a shifarobe" is slang for when a white girl seeks to engage in interracial sex. In "To Kill a Mockingbird" Tom Robinson's accuser is a white girl who told him if he would come inside and bust up a shifarobe for her she would give him a nickel. Once inside she throws herself on him. Her forbidden attraction discovered by her racist father she is beaten by him but falsely accuses Tom of beating and raping her.
Dawg, I saw you with that white girl at the movies. You "bust up a shifarobe"?
by egonovus May 03, 2009