A phrase used in the sentimental Lorde song of the same name to describe dreaming, ruminating, overthinking or confusion. A nail salon is a place where you sit quietly, often reflecting on your thoughts. In the song, Lorde asks herself whether she's thinking clearly or just high and confused. Really fucking deep.
Conversation In Your Head:
Thought 1: "Does Jack like me?"
Thought 2: "Maybe you're just stoned at the nail salon. You should learn to love yourself before you love anyone else."