I have never known a person who can make me laugh as much as my son. He says the silliest, most hillarious things on a regular basis. There are days when I don't know what I would do without his giggles or the giggles he makes come out of my mouth. My daughter is starting to this as well. She has been really, REALLY laughing lately. And I can make her laugh.
Really, is there anything sweeter than the sound of a baby who has just learned how to belly laugh? No.