Everyone (ie. like 3 people, myself included) are talking about p! panic, i! I’m scared, n! nauseous, k! death, but no one’s talking about n! never sad!
Even from the get go the song was about Barbie’s impending crisis. Never sad, especially compared to the rest of the “positive” acronym is a giant red flag in a world of pink. It’s jarring in its focus on the lack of something and instead draws more attention to it than the rest of the words, like it’s there but Barbie is just pushing it down and hoping that pretending it isn’t there will make it go away.