May 8, 2014|4:18 pm

Happy baby (Screenshot: FunnyFuse/YouTube)

In this YouTube classic what would make Pharrell Williams proud, a mother says "Happy!" over and over to entertain her baby girl. The baby laughs, and that's adorable in itself.

But when her daughter actually enunciates "happy," they both burst out into laughter. The baby's joyful giggles remain ringing in your ears long after the video is done – and that's a good thing.