What can we learn from Bert and Ernie

I was at a friends house yesterday and her two year old daughter wanted to watch a YouTube video of "If you are happy and you know it...". She likes to watch it over and over again. I don't. I wanted to find something more entertaining.
Sesame St comes to mind not just because it is so popular, but also when I am away from home and in a hotel it seems to be what is on the first thing in the morning and is highly preferable to the regular morning TV shows with annoying presenters. It is also far more educational for anyone. And who can go past Oscar the Grouch, Cookie Monster or the Count?
This time I decided to do a search on Bert and Ernie. After realising that the revamped mash-up version of Bert and Ernie dubbed over with Joe Pesci and Robert De Niro in Casino was a little strong for her tender ears, I found this one.  I am  sure that there is a lesson here for us, but will let you work out what the analogy is.