Being The Cool Science Dad that I am, I had my two daughters help me out with this task. We set it up just as described in the video and I started to blow through the straw. The result? Nothing. Hmmm....as any good scientist does, we started to investigate why it wasn't working. We tried various things and eventually cut the straw inside the glass as short as possible. This reduces the height the liquid in the glass as to rise.
The result? It worked, although you have to blow very hard into the straw. I was barely able to get it to work, and my daughters had no luck at all, but it worked!
Try it out yourself! Just be sure to have towels ready because you'll be blowing liquid out of the glass onto the wall/floor. It's a cool science experiment because you see water appear to magically rise up the straw and out of the glass. I say 'appear' because it's not magic. It's science!