Bieber Fever:
(According to Urban Dictionary) The act or disease of being literally obsessed with Justin Bieber. Most commonly found in young teenage girls. Ex: "Omg, I love Justin Bieber sooo much. I'm going to marry him!"
This tiny, little (redundant, I know) heart throb, Justin Bieber, is really winning over the hearts of millions of pre-teen and teenage girls... and only at the young age of 16. I, myself, do not have "Bieber Fever," because well... I'm not obsessed. Nor would I want to marry him... He's younger than me, and I have a boyfriend. I merely enjoy his music... It's catchy, and he can sing.
Who can complain about that?
