Bad Day is a single by Canadian recording artist Justin Bieber. It was released on November 4, 2013.

There are times in relationships where things aren't going well, where you know something isn't right. But when you're in love, you feel like no matter what, you'll make it work...until the day comes where the other person doesn't feel the same way and walks out. That day - the day where everything you were willing to fight for is gone - is what Bad Day is all about. -JB