Maybe she doesn't understand the meaning of the word "foolish"

Mama and Zanzi are having a conversation about a friend of ours' birthday. Without skipping one beat in the conversation, Zanzi changes the subject, however I think in her mind it was somehow related...

Zanzi: And the foolish man!

Mama: The foolish man?

Zanzi: Yeah, the one who built his house upon the sand?

Mama: Yeah...

Zanzi: (with a great big, truly happy smile on her face) I'm that foolish man!