When we had the DiPerna family beach trip in August, Uncle Danny taught Xander the "I'm watching you" baby sign from the Meet the Fockers. I had never seen the movie, but we spent all week trying to teach it to Xander, just because it was funny. He sort of did it a few times. Then we got home and we both kind of forgot about it.
Yesterday we were waiting for Jessica to finish her martial arts class. He put his finger on his cheek, below his eye, and started pulling down. He did it a couple of times before I remembered this was what we had taught him. Then he started saying "waaa, waaaa" and I realized he was saying "Watch, watch." (You know, "I'm watching you.")
He's such a smart little fellow!