Having fun?

Today Zoe's friend, Brooke (8 months old), came over to play while her mom ran some errands. We had a great time reading books, singing songs, and playing with lots of toys. At one point though, Brooke was getting fussy and started to cry a little...nothing too bad. At first Zoe just looked at her wondering what was going on, then Zoe started to cry too. Well, that made Brooke cry even harder. It was the funniest thing in the world. They sat there and fed off each other's cries. I probably didn't help the matter because I was laughing so hard. I did manage to get a couple pictures of it (I also have a short video clip of the crying. I'll get that put into photobucket...):