If this doesn't put a smile on your face...
...then nothing will.
Amelia, back when she was about ten months old:
Wish I could figure out how to bottle that laughter.
I recommend at least two viewings for optimum health benefits. Side effects may include smiling.
The clip is only 10 seconds, but in case you're on a really slow connection, just look at this picture and imagine the most infectious giggle you can...