Tot Boy Can't Figure Out How A Drinking Fountain Works

I don't know about you, but I've never been a fan of the drinking fountains. I agree they're an amazing invention, and they are really practical. But, I can not get used to drinking from them. I would much rather bring bottled water from home, then drinking from one. Don't know why, but I can't get used to it. However, it seems I am not the only one. The adorable tot boy in this video is having the same problem as I am. He is standing in front of a drinking fountain, and he has figured out how it works. So, you press the button and the water starts pouring. Okay, perfect. But, as soon as the little boy gets closer to the water, it stops pouring. What, and why? Well, the little boy moves his finger from the button each time he comes close to the water. But, he does not seem to realize it. LOL!