Basically, this song is talking about how this girl was being taken advantage of by her lover, and for a while she was struggling and trying to get out of the relationship. Finally, she stood up for herself and warned their ex they would soon have karma for how he mistreated her. Lines like "I crumbled before your eyes" signal that she was having a really hard time being with her boyfriend. Later in the song, she starts to get more and more confident, and finally at the end of the song, she assures her ex he is going to soon meet his "doom doom doom d-d-doom". I always play this song if I need a little confidence boost, or just want to show my fierce side of my dancing. Great job, BlackPink!!!