Your first two syllable word

Do you remember your first two syllable word? Unlikely.

Three years ago I read that the most common two syllable word that's first spoken by children is story. 

My first child had just been born so I mentioned the word story to her for the next two years. When she finally came up with her first two syllable word it was YouTube.

I did the same with my second child. It didn't take him as long to speak his first two syllable word but that turned out to be waffle.

I'm wondering how accurate that "most common" fact is...

What was your child's first two syllable word?