In the style of Jimmy Fallon's "Whisper Challenge," one woman gave her mom the surprise of a lifetime [1]: that she is going to be a grandma. In the challenge, the adorable grandma-to-be is shown wearing a large pair of headphones — and screaming everything she says because of the loud music playing in her ears — while trying to guess what her daughter is saying to her by lip-reading.

"This is my mom; she thinks she's doing the headphone challenge," the mom-to-be wrote on a video post shared to Facebook. "We had a little more in store for her!"

The mom-to-be starts by feeding her a few famous names, which she definitely overenunciates, and her mom proves to be a headphone challenge champ by guessing them all [2]. So what happens when she lip-reads the words "we're pregnant" (on her first try, by the way!) is too hilarious not to watch on repeat a few times.