A rare medical condition requiring one to wear headphones around his or her neck at all times. Especially common among Western young adult/teenage males and promoters within the entertainment industry.
Young Adult 1: What's Mike got on his neck? Looks like a big chunk of metal.
Young Adult 2: Oh, he's got Headphone Neck Syndrome.
Young Adult 1: Is it contagious?
Young Adult 2: Very! The Beats by Dre type is the most common form of this blight.