It is a good thing this detrimental person or thing is leaving, because one is better off without them or it. My dad is finally throwing out that ugly old sofa that he's had since college—good riddance! A: "Did you hear that Janet broke up with her boyfriend?" B: "Good riddance to bad rubbish. That deadbeat was really dragging her down."

An expression used when one is pleased that someone or something is leaving or stopping. Well, I didn't want to talk to you anyway, so good riddance to bad rubbish! A lot of voters are prepared to say "good riddance" to her at the end of her term.