I remember Summy had an early sense of humor. Maybe all babies do. Anyway, Pranav has one too. He laughs such big laughs for such a little person. Especially when big sister is around.
She panted like a puppy while holding a piece of cloth in her mouth one day recently. He thought it was so hilarious, he would burst out laughing at just the sight of her, that whole day. She enjoys being his clown, and he enjoys her antics.
Also, sometimes he laughs just because I laugh. It escalates quickly, because it makes me laugh more to see him laugh with me, and that makes him laugh even more, and so on, until we are both in fits. I do not remember that eight month olds are this social, though I remember having the same kind of experience with Summy when she was older.