SpongeBob SquarePants (1999)

S8E46 Squid Baby

After suffering a head injury, Squidward believes he has reverted to a baby state, prompting SpongeBob and Patrick to take on the responsibility of caring for him. As they navigate this unexpected situation, the duo finds themselves in a series of amusing and chaotic scenarios while trying to keep their "baby" Squidward entertained and safe.