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1. An urban legend or myth that, despite being proven false on numerous occasions, still continues to be passed off as fact.

2. An event or situation that causes annoyance through repetitive occurances.
1. Even though snopes debunked the frozen Walt Disney myth years ago, that urban legend keeps popping up like a hanging munchkin.

2. Oh man, Brad's continuously forgetting to wash the dishes is my hanging munchkin.
by IamaBobJonesGraduate November 28, 2010