Ricky asking if Elmo knows what "necrophilia" is... priceless. I also have to give credit to the puppeteer(s?) who move Elmo around; the way the little muppet moves and speaks (and improvises), he seems real. Look, I said "he", not "it". Ricky falls naturally into the illusion that he is goofing off with a living thing, and so does everyone else who watches it. That's remarkable behind-the-googly-eyes skill, there.