Swapping Moms

Nobita, Shizuka and Suneo are all fed up with their moms, so Doraemon takes out a gadget that allows them to swap each others moms (Suneo's mom becomes Shizuka's, Nobita's mom becomes Suneo's and Shizuka's mom becomes Nobita's). After staying with each other's moms for a whole day, they start to miss their own mothers and realize they weren't so bad after all.