Explaining Cartoons on Instagram: "Follow me👉@explainingcartoons The “F.U.N.” episode kicks off with Plankton’s latest attempt to steal the Krabby Patty formula going wrong, leaving SpongeBob feeling sorry for him. Deciding that what Plankton really needs is a friend, SpongeBob takes him out for a full day of “fun,” complete with jellyfishing, blowing bubbles, and riding Glove World–style attractions. This all builds into the legendary musical number spelling out F is for friends who do stuff t