Lukeism

My adjectives are not up to par according to Luke. Here is how the conversation went today as we were leaving to take a walk.
Me- "It is a nice day today"
Luke-"No it's not mama."
Me - "Why?"
Luke-"It's a beautiful day. Mama, say it's a beautiful day"
Me - "oh yes it is a beautiful day.
Luke- yes mama. It's a beautiful day. Say it again.