Tonton Streaming Dennis the Menace (1985) S1E7 - Spa Blahs/Whale of a Tale/Disaster on the Green

Mrs. Wilson has bought George a gift membership at a Health Spa. Dennis accompanies Wilson on his first visit, where he proceeds to drive poor Wilson nuts, speeding up his exercycle, pouring bubble bath in the spa water, etc. Finally the management tears up Wilson's membership.