So apparently, Baby Girl has figured out that she can make her brother laugh. I think she is just realizing that he can be fun, and is not just a crying, pooping, spitting machine.
Lately, when he sees his sister, Baby Boy will try and grab her, while opening his mouth really wide. I have no idea why he does this. She says "he's going to bite me!" while we remind her he has to have teeth to do that. I prefer to think it's his overwhelming excitement. Probably, he just wants to gnaw on her shirt.
I caught her doing this thing with her hair the other morning, and Baby Boy was laughing so hard he actually snorted.
We recreated the moment yesterday after school.