Wha?

(While looking through an alphabet book)

Me: What's this? (pointing to the letter "M")
Linus: M!
Me: Yes! What's this? (pointing to the letter "K")
Linus: B!
Me: Close! It kinda looks like a "B", but it's a "K".
Linus: K!
Me: Yes! What's this? (pointing to the letter "J")
Linus: Wonda Woman!
Me: What? What is this?
Linus: Wonda Woman!
Me: Huh.