Yes, its quite offensive. It gives people the impression that bipolar disorder is something its not. Just like that damn Katy Perry song about the "bipolar" boyfriend.

"Popularizing Psychological Terms".....?!?!? WTH? Crap like this makes people believe that they have severe mental disorders for normal life happenings. I'm not sad, I'm DEPRESSED. I'm not happy, I'm MANIC. My boyfriend broke up with me, I must have PTSD! Blah.