 Popeye s 4 newphews try to sneak out instead of eating their spinach, so Popeye demonstrates some of the benefits: playing piano, dancing, shadow boxing but each is met with "but we don t like spinach." Finally, Popeye spanks them, and they start eating their spinach. After which, they play the piano until it breaks then use boards from the wreckage to spank Popeye.