VIDEO: Dream gift turns grown man into little boy

If you get this kind of reaction to a gift you're giving this year, you've done something right.

Karen Piedra-Jimenez's boyfriend had been saving up for a PS4 video game system, but ended up having to spend the money on something else.

So she bought him a PS4 as a Christmas gift.

After opening it, he smiled and simply said "I love you."

He then held that gift like he was the most excited boy in all the land.

And yet the bigger smile may be the one we can't see, from the woman just behind that camera.