someone who is an ignorant idiot. a really fucking stupid idiot. someone who is rascist and does not know how to do jack shit, or act normal, or be nice. A real punkass who does not know what they are doing, and are bullshitting their actions. Commonly used in a joking, nonserious manner; othertimes used as a way to combine shit and fuck when describing a situation or person.
What are you doing, shitfucker? Give me my keys back!