A few people have asked about the signing, so I took a couple quick videos of the babies signing. The sign for "baby" is what Wyatt is attempting. It is basically rocking your arms like you are holding a baby. Watch as Wyatt gets a little carried away with this one..
Then this next one is of the word "hat". Hat is signed by tapping your head where your hat sits. First you'll see Wyatt do it, then Luke is especially talented to sign it while he walks. Then here comes Jax for a close up demonstration.