The song "Bad" by Erika Costell is about the realization and aftermath of being deceived and mistreated in a relationship. The lyrics describe how the moment the person deceived her, their relationship lost all its meaning. Erika reflects on how she used to believe that she would be upset if someone treated her badly, but deep down, she knew that person's true nature. The song expresses Erika's disbelief that she wasted her time and emotions on someone who turned out to be deceitful. She regrets losing sleep and being hung up on someone who didn't deserve her attention. However, as the song progresses, Erika reveals that she is now grateful for the experience of being treated badly. She realizes that if this person had never shown their true colors, she would have never known what a good relationship truly entails. Overall, "Bad" portrays the journey of acknowledging the deception in a relationship, coming to terms with it, and ultimately finding the strength to be grateful for the lesson learned.