Morning pages is a writing practice from Julia Cameron's "The Artist's Way": handwrite three pages of stream-of-consciousness first thing in the morning. Not concerning, often a useful creativity tool. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.