Answer: Patrick
Patrick becomes Patricia and gets a job at the Krusty Krab. Squidward develops a crush on her as well. Patrick finds out in the end that it is just a flyer for "get outta town" vacations.
From Quiz: Spongebob Quiz From a Master
Answer: Patrick
Patrick and SpongeBob both have the "Best Friends Forever" ring. Although they are best friends, they got in a fight when Squidward made them think they were insulting each other. Sandy is one of his friends, but not his best friend. Gary is his pet snail.
From Quiz: Fun with "SpongeBob SquarePants"
Answer: "Help Wanted"
It aired May 1, 1999.
From Quiz: Impossible "SpongeBob" Quiz
Answer: Poseidon Elementary
We find this out in the episode "Friend or Foe" when Plankton and Mr. Krabs are being bullied.
From Quiz: The Quiz of "Spongebob" 3!
Answer: Spot
Spot gets his name from attacking everyone besides Plankton when he hears the word spot.
From Quiz: The Quiz of "Spongebob" 2
Answer: Plankton's Good Eye
He appeared in "Plankton's Good Eye". Bubble Bass had a house fire and Plankton saved him.
From Quiz: The Quiz of "Spongebob"!
Answer: You and me
From "Pizza Delivery", SpongeBob sang "The Krusty Krab Pizza! Is the Pizza! For you and me!" Who can forget the part about the pioneers in this 1999 episode? Who can forget that moss always points to civilization? And he was dead right! Who can forget when they delivered the pizza to Tom at the end, he refused to take it because SpongeBob forgot to bring the Diet Dr. Kelp, which he didn't even order? So Squidward gave the episode a first-rate ending when he took the pizza and threw it in his ungrateful face!
From Quiz: Silly SpongeBob SillyPants
Answer: 62 degrees
Mr. Krabs keeps the Krusty Krab at 62 degrees because "heat costs money".
From Quiz: "SpongeBob Squarepants" For Masters
Answer: "The Bully"
In "The Bully", after SpongeBob tells Mrs. Puff that he fears Flatts will kick his butt, Mrs. Puff talks to Flatts for SpongeBob and uses SpongeBob's name. Flatts lies to Mrs. Puff and tells her that he is from a town where kicking someone's butt means they want to be your friend (and play some sports with you on the weekends). Although the story would clearly seem to be a stretch, perhaps the line added on about playing sports on weekends made it more believable.
While Mrs. Puff describes what happened with SpongeBob, Flatts builds SpongeBob's image and likeness out of sand behind Mrs. Puff's back. He then kicks it, demolishing it. It is then SpongeBob yells, "I got diarrhea!" and runs off.
From Quiz: SpongeBob SquareQuiz
Answer: A hook in the eye
Just before the premiere of "Tentacle Vision", DJ Patchy said, "Take care not to stab the person next to you. Nothing ruins a party like a hook in the eye. Take it from me, I know." Nowadays, not only do we know how Patchy lost his hand, we also know how he lost his eye (Even though his eye patch is on the opposite eye from special to special, even within the same episodes!). During the marathon, DJ Patchy spun the record to make it sound like SpongeBob's laughter. "Didn't that warm your heart?"
From Quiz: The Ultimate SpongeBob SpongeBash