15. Smunday

Complete story — includes the ending

A sick, bedridden Lois does not realize she has spent two days in bed, and, assuming it is Sunday when it is actually Monday, does not make the boys go to school—or lift their latest grounding about giving away Dewey's bike. The boys are initially happy to get the day off school, but soon realize their mistake, as they cannot leave the house in case someone sees them and tells Lois. Francis calls the boys about hiding an incriminating letter home about his latest offense at the academy, but Lois ends up finding it anyway. Caught up with both her flu and Francis' misdemeanor, she ignores punishing the boys for skipping school. Out of fear of Lois sending Francis to a prison farm, the boys try to come up with a prank that will make Lois divert her attention from Francis. Meanwhile, Hal visits a Porsche dealership and ends up ruining a car because he caught Lois' flu. The salesman drives Hal home in the car, where it is further damaged by the boys' prank.