SpongeBob is at boating school, and Mrs. Puff announces that there's a new student. His name is Flatts the Flounder, and he tells SpongeBob that he is going to "kick his butt." SpongeBob at first assumes him to be joking, but Flatts soon makes it clear that he really means to beat up SpongeBob. SpongeBob, who takes this extremely seriously, tries to seek help and to reason with Flatts, but to no avail.
He eventually runs away into town, where Flatts attempts to run him over with a garbage truck, while he eventually drives over a banana peel, causing it to flip over. Flatts awakens in the hospital, where he learns that SpongeBob saved his life by performing CPR on him for five hours straight.
Despite this, Flatts continues to pursue SpongeBob; when SpongeBob runs through town, some people kick an old man's butt who they think is going to kick SpongeBob's butt. The old man was by a bus stop and a guy asks how many times they have to teach him this lesson. Eventually, he corners SpongeBob in his own home, where he proceeds to beat him up.
However, SpongeBob's spongy body absorbs the blows, and he is unharmed. Flatts continues to hit SpongeBob nonstop throughout all of next week, until he finally faints from exhaustion; his classmates cheer for SpongeBob. However, pitying Flatts, SpongeBob starts a speech about how violence leads to nowhere, which ends with him making a fist. Mrs. Puff enters and sees SpongeBob making a fist, and believes SpongeBob beat up Flatts. The episode ends with Mrs. Puff saying "I'm going to kick your butt!" to SpongeBob.
While this is his first major role, this is Flatts' third appearance on the show. His previous two were in Sandy's Rocket and Texas.
This episode, along with "Just One Bite," are the only episodes from Season 3 to be aired in 2001.
When the uncut version of "Just One Bite" was aired, "The Bully" would be aired first, and "Just One Bite" second. However, when the scene was deleted, the order of the two episodes is reversed. In some TV guides, the episode is still listed as "The Bully"; "Just One Bite."
While SpongeBob and Flatts are talking, Mrs. Puff is saying "blah blah blah red light blah blah blah green light blah blah speed" in the background.
When Patrick is talking to SpongeBob on the phone, Patrick says Flatts was his "Community College Buddy," implying that Patrick went to college.
When SpongeBob runs to the bathrooms, there is a flyer that reads, "Join the Glee Club."
When Flatts first walks into the classroom, it shows that the school leads outside. Later, SpongeBob is standing in a hallway, where the door would lead to. The hallway also appears in "New Student Starfish."
Flatts apparently recovers from his injuries to chase SpongeBob out of the hospital within less than a minute.
It's unknown if Flatts ever got his driving license or just moved to a new school.
Charlie is purple instead of blue and wear a green pants instead of red in this episode.
Running Gag: Twice during the episode, SpongeBob runs in fear from Flatts, and inadvertently points to an old fish (Lonnie) when he says Flatts is gonna kick his butt. The citizens of Bikini Bottom, led by Harold, are angry at this, and try to beat up the old man.
When the students are clapping for Flatts when he first enters the class, SpongeBob cannot be seen anywhere.
When SpongeBob crashes into Flatts's dad's boat, there is only 1 seat. Later it shows Flatts in the car, too.
Flatts said he was going to kick SpongeBob's butt, but he only hit him.
When the Garbage truck is idling behind SpongeBob, it says "Bikini Bottom Garbage." Later, it is blank.
When Flatts is making a Sand Sculpture of SpongeBob and kicking it, you can see that Mrs. Puff's mouth is not moving while she is heard talking.
Flatts is seen driving a dump truck in the episode, which makes the fact that he is in boating school seem illogical. However, he could be in here for a very similar reason as Squidward in "Boating Buddies."
It is possible that he stole the truck.
SpongeBob's eyelashes are missing for a short amount of time while Mrs. Puff says "And maybe play some sports with you on weekends."
SpongeBob states that he only said three words to Flatts before he ran out of class. However, he actually said 15 words since he said more than just "Hi, I'm SpongeBob."