Kentucky dad Adam Brown has fraternal twins that are barely 2 months old. One is a placid, easy-going boy. The other is a girl who is fussy with colic. So, like many dads, Brown makes noises at her. Baby girl calms down, even for just a bit. But, she also has a novel reaction to one sound.

This video was posted on January 18. By the next morning, it had gone viral. The video was posted on Huffington Post, and shown on “Good Morning America”, and “Jimmy Kimmel Live”.

As cynical as one can get about the world, often it’s babies and kittens that make the Internet run.