Plaza Sésamo

So my Spanish teacher mentioned that she has a student who watches the Mexican version of Sesame Street (Plaza Sésamo) and claims to learn a load of Spanish from it. Which really makes perfect sense if you think about it. All in all, Sesame Street is a show to teach language to newbies. So I come right home, go to youtube, type in Plaza Sésamo and click on the first video that comes up. I listen hard and move my face closer to the screen as if this will help me understand a few things, which I don't...until cookie monster comes on. Take a listen. You'll understand too. (I still have no idea of what this nice little sketch is about. And after gathering a few words from the comments left on youtube, I have to guess that it's not very nice. And that I probably wouldn't post this here if I had any clue about what's being said.) I just had to share my Spanish lesson gone weird.