"Ah-coo"

Angie's been saying this for several days, at least, whenever she gets her diaper changed. I hand her the new diaper to open and she says, "Ah-coo". Patiently, I respond, "No, that's a diaper, sweetie." And she repeats, "Ah-coo". Today I figured out why. There's a picture of Blue, the puppy from Blue's Clues, on the front of her diaper. What's the most recognizable phrase from that show? "A clue, a clue!" Yep. Angie watches Blue's Clues.