Hearing Things?

On the way to Joel's parents' house for dinner tonight Joel and I both swear that Rebecca said "Uh oh" (her one confirmed word) plus three more -- "dada," "hi," and "yay!" She said "dada" and "hi" when Joel adjusted the rear-view mirror to say hello to her while he was driving, and then when we applauded her, she clapped also and said "Yay!" Joel will back me up on this, I swear. Though after months of listening to baby-babble, it is tempting to chalk it up to auditory hallucinations...