These are are just too adorable. This video along could brighten anyone's mood. 

When mom and dad try to scare them, all they can do is giggle. Not only do they have the sweetest giggle of all time, but they giggle at the same time. This is the kind of game that I am sure could go on for hours and hours, just to keep those two precious girls giggling away. 

Enjoy the giggling and the sweetness in this video!