What a Joy!

For the first time the other day I heard my beautiful newborn 2 month old laugh. She has been smiling for a while, but she has not actually had a sound come out of her mouth. My husband and I was so overjoyed that we both begin to cry. I never thought that I could feel so much joy from hearing someone laugh. I have heard about all of the other first and how adorable they were, but what about a laugh. The feeling was something I could just not describe. Has anyone else had one of those unusual first?