This is the next song in the Fucked Up Relationship Album, Part 4. The main character, in anticipating breaking up with her controlling boyfriend, comes up with a master  plan. See, he gave her an ultimatum a few years ago that if she smokes pot, he'll dump her. Now that she wants to break up with him, it'll be easier, to her thinking, cuz rather than having to dump him, she can just tell him she smoked pot and he'll dump her. Brilliant!!!!