False victory

Max actually said Mama today!!!! I was sitting at the computer, Ella on my lap, checking my e-mail with my back to him. He was standing on his booster seat, as usual, playing around with his cereal.
"Mama!" he screamed.
I turned and said, "What?" thinking maybe he was really saying Spongebob.
"Mama! Mama! Mama!" he screamed again.
"YES I squealed!" and I went pick him up balancing Ella on one side, Max on the other.
"Mama!" he said again.
My heart fluttered, I was so excited. After 19 months, he was finally calling out to me.
Just to make sure he knew what he was talking about, I then asked, "Who is Mama?"
And without missing a beat, he looked right at his little sister, pointed to her, and repeatedly said, "Mama!" while poking her in the back.

False victory. I give up.