How does your baby greet you?

Aaron is still not talking yet so he doesn't yell out 'Mama'. Instead, he licks his lips, waves his arms around and then sticks two fingers in his mouth. I'm really starting to think that latching on is his way of saying 'Hi'. He's not really feeding, and is only on for maybe 30 seconds to a minute and he's off again. It seems to happen after his morning walk, evening walk, when I get out of the gym, when he comes out of his room and sees me....the list goes on. Strange...yet adorable.