(WVUE) - Little Kathryn could not contain herself when she was told that she was going to be a big sister.
Cameras rolling, the family records what is sure to be a touching moment. The girl's father presents the 3-year-old with a book titled "The Big Sister's Book of Waiting."
"You know why we got you that? You're going to be a big sister," he said.
The girl's unexpected response draws roars of laughter from her father.
The video was uploaded to YouTube on March 19 and has since gone viral, receiving over one million views.
Mobile user? Watch here: http://bit.ly/1AUWkzs
Editor's note: Just in case you can't pick up what she says, the girl whispers "I farted."