Similar to the "Bieber Fever", the Black Plague is a very deadly disease, and highly contagious. Thanks to Rebecca Black, she has spread this new disease to million and possible billions of innocent people.
Logan: Ugh, Bro! I cant get that stupid Rebecca Black song "Friday" out of my head!!
Shane: Hmmm this sounds really similar to the "Bieber Fever".
Michael: No dude, its worse. I think Logan has caught..."THE BLACK PLAGUE!"