Flattening Iron

Nobita, Gian, and Suneo are forced by Gian's cousin to move his furniture into his new apartment. When Gian and Suneo leave all the work to Nobita, Doraemon helps him out by using the Flattening Iron to make the furniture moving easier. However, Gian and Suneo mix up the apartments and move the furniture back to the original apartment, which angered Gian's cousin.