Kids say the most darned depressing things. Take these four little angels, for instance. They were just trying to record a sweet birthday message for their dear grandmother (or "gia," as they call her—adorable), but one of them didn't know when to leave good enough alone. Instead, he brought up the elephant that's always in the room, where grandparents are concerned.
Considering that this video found its way onto the Internet, it's presumable that the kids' parents (and by extension, gia) though it was funny, and were OK with it. Which is good. They wouldn't want to hurt her feelings, and then have to remember her that way.