OMG, the best sound in the world has to be babies laughing. I absolutely LOVE it when our little monkey laughs, and I will do almost anything to hear it. Sometime, though, I am totally surprised by what makes her laugh.
The other night it was just me and her, Daddy was at work. I was feeding her her last bottle of the night and must have grazed her belly. She is ticklish! She started to laugh. So, I kept it up. She was squealing and laughing as I was tickling her little belly. Then, I started to tickle her toes. That was also a hit! More squealing and laughing ensued!
This is behavior you expect when a little one is older, but not from a baby. At least, I didn't expect it. It was so wonderful! It makes the sleepless nights, and grumpy days all worth it!!