There are days when you just want to cry, days when you just want to scream and the there are those days. You know the ones when nothing else will do. I'm talking about laughing so hard you lose control of your body functions laughing so hard that your ribs hurt for days. well this next video did that later part to me. I don't know what it is about a child and a family pet, that seems to put your whole day back into perspective. I have to warn you though, uncontrollable laughter is around the corner.I've often wondered if the child even knows what he or she is even laughing at. Is it a giggle button that gets pushed and the kid loses control. Or is it that the child really finds a dog snapping at bubbles extremely humorous. What do you think? Does the kid know what he's laughing at?