At an antique sale in the school gym, the kids tout the revolutionary, environmentally-friendly virtues of all the appliances that work without electricity.; Veronica goes on a physical-fitness kick, but finds that Betty can easily do all the exercises that wear her out.; Betty and Veronica mistake a geeky door-to-door salesman for the son of a famous movie producer.; The girls have the knob at the bottom of the Lodges' stairway removed, so that they can take turns sliding down the bannister. Furious at these kids for turning the house into "some sort of cheap carnival," Smithers waxes the bannister to make it extra-slippery.