Literalist

A conversation reported to me by the 14-year-old:

Wonderboy (looking at book): "Biscuit is spelled B-I-S-C-U-I-T."

Jane (hiding book): "That's right! What does B-I-S-C-U-I-T spell?"

Wonderboy: "Biscuit!"

Jane (still hiding book): "That's right! How do you spell Biscuit?"

Wonderboy: "With letters!"