She Wears My Ring - S1.E23

Brenda goes to market, leaving Troy and Pilbeam in charge of her house. After Troy accidentally washes Brenda's prized wedding ring down the sink, Pilbeam enlists the help of Olive, Frank and the Inventor to dig up the road and find it in the water pipes before Brenda returns. Topics covered: pressure, water pressure, plungers, water flow, suction.