question for any / all Chicago Dopers... (Berwyn?)

Do any of you watch Svengoolie?
I have been watching him since I was a kid, but I just don’t get all of the BERWYN jokes. I have never been near Berwyn. So, what’s the deal with Berwyn anyway? From all the jabs it gets by Sven, I assume it’s not a very appealing place. details please!

(For those who don’t know who Svengoolie is, here’s a link

Ooops, bad link

try this one: