My way of looking at it is that her "man" is gone, somewhere, either dead or broken up with her, and it's their anniversary(happy birthday us). So, she's going to get drunk to forget about him. She "strips down to her dun dun dunns" and then later on when they would "vomit and run" I got that she was either masterbating because she's lonely or just the sight of her depression and her drinking benge would terrifying them.
My way of looking at it is that her "man" is gone, somewhere, either dead or broken up with her, and it's their anniversary(happy birthday us). So, she's going to get drunk to forget about him. She "strips down to her dun dun dunns" and then later on when they would "vomit and run" I got that she was either masterbating because she's lonely or just the sight of her depression and her drinking benge would terrifying them.
So basically she's sad and lonely...