As young Fred fixes a doll, he imagines himself - in a black and white scene - as Dr. Frankenstein, building an enormous doll named Frankenpebble, who identifies itself as a man, despite the fact that he's wearing a dress. If you ever dreamt of seeing a giant guy in a dress and curlers calling Wilma his girlfriend, you've come to the right place. Otherwise, this one's pretty expendable.
The only episode from the old days that I remember dealt with drugs and a Michael Jackstone concert - I think it was a prime time special. And Jackstone was probably quite a bit scarier than Frankenpebble.