Panel one: Liz makes baby noises and tries to poke John's tongue. John makes baby noises, too.
Panel two: John drops Liz on her head and she dies. No, no, sorry, wrong panel. John is caught at his baby-talking!
Panel three: Elly smirks terrifyingly. John pretends to be making ponderous conversation.
I remain uninspired and bored! Sigh, Ms. Johnston.