Bilingual Baby?

So we're all getting over yucky colds............last week when we were driving home from school, I sneezed. Harper murmured something that sounded like, "God bless you". I told her thank you and excused myself. Next Pierce said, "She didn't say God bless you, she said, "*insert baby babbles*". I said, "What does that mean?" Without missing a beat, he replied, "I know, she said "God bless you" in Spanish!