I might be the last one on this bandwagon (again), but the internet is for porn song (and it's various other versions) are just hilarious. Now I'm going to be singing this all day!
Wow. Your really ARE the last one to have seen this. :)
I haven't seen it either... but I know the song very well. It's from a great little musical called Avenue Q. It's Sesame Street for adults, and I highly recommend it :)