Arthur's Baby
- Accidental Aesop: You Are Better Than You Think You Are when it comes to being an older sibling to a baby. Arthur is convinced that Kate hates him because she cries every time he even gets a few inches close to her. It turns out she was just too little to know any better; she's fine with Arthur watching her for a few minutes, and later kisses him after Arthur burps her.
- Take That, Scrappy!:
D.W.: (after seeing her baby videos) "Don't I look adorable? I bet the new baby will be just like me!"
Arthur: "That's what I'm afraid of!"
D.W.'s Baby
- Unintentionally Sympathetic: While D.W. did cross a few lines with blaming Kate for crimes and trying to sell her, her frustrations are rather understandable given that her parents made her share her bedroom with Kate, who was a newborn.
