Nathan's signs

I haven't updated Nathan's signs in a while, and he has been adding quite a bit to the list. So just a reminder this is the original list:
milk
all done
sleep
cat
eat
dog
bath
airplane
bird
brush teeth (I forgot this one originally)

Others that he has picked up (most of them Nathan has created his own sign):
car/truck
pretzel
pacifier
baby
music/dance

The latest one that we think he is doing is kinda funny. Recently, Nathan has been tapping his head when he sees people with hats on. Well, I think Bob has narrowed it down even more, it's when he sees motorcycle helmets. Now Nathan has associated the helmets with motorcycles. He will tap his head with his hand whenever he sees or hears a motorcycle.

Another sign that is really cute, is Nathan's sign for music or dancing. Nathan also created this one himself. When he hears a song he likes, he will hold his hands above his head with his hands in fists, then bend his wrists so his fists goes up and down. We call it the Nathan dance. I guess I'll have to take a video and post it because the description really doesn't capture the sign at all!