While at the Bikini Bottom Mall, SpongeBob and Patrick find shirts that say "Best Friend" with an arrow pointing. This arrow points to the side, indicating the wearer's best friend—SpongeBob's shirt points to his left, and Patrick's to his right, therefore when they stand beside one another, their shirts point at each other. However, when either of them faces a different direction, the arrow points elsewhere, thus "sending out the wrong signals." So, they decide to look for new friendship clothes. SpongeBob finds a group of citizens who were putting on an annual event, which was reenacting the historical Battle of Bikini Bottom. SpongeBob and Patrick approach them and then SpongeBob asks one of the soldiers where him and his friends get their cool outfits. However, the fish stated that he did not have friends and that he hates just about everyone here. SpongeBob then hears about the Battle of Bikini Bottom. He is told that there were two factions, the clean, who spend all their time washing their hands and the dirty, who had better things to do then wash their hands.
They then had a war over who is better. Patrick tells SpongeBob the tale wrong, saying that the dirty won, annoying the other fish, and making them walk away. SpongeBob and Patrick begin to argue and then they get uniforms and start their own war. After many times of attacking each other, SpongeBob gets dirtier while Patrick ends up cleaner from each other's various attacks. Patrick then picks his nose and chases SpongeBob into the Krusty Krab. SpongeBob runs by Mr. Krabs, yelling that Patrick is digging for "gold," which he takes for real but leaves the kitchen disappointed. SpongeBob attacks Patrick with food until Patrick grabs two Krabby Patties and uses them for socks. Angrily, SpongeBob fills up with fury making him blow up. Outside, SpongeBob swallows a soap bar and prepares to make Patrick clean. Patrick picks up an entire dumpster and throws it at SpongeBob when he refuses to stand down. Patrick is made squeaky clean and SpongeBob is covered from the trash from the dumpster. The fish reenacting the battle come and see the two friends forgiving each other and tells them that it is not over until they have a winner. SpongeBob then explains to them to not remember events that divide them, but recall what brings them together. Then the fish who were doing the reenactment chose to do something "more manly": football, hockey or knitting fluffy sweaters. Then, SpongeBob and Patrick go home as the episode ends.
( ‣ ) Associated production music
( • ) Original music
( ◦ ) SpongeBob music
‣Fife and Drum March - Larry Hochman [title card] ‣Shoppers World - Harry Bluestone [opening] ‣Colonial March - Larry Hochman ["You mean like those guys?"] ‣We Shall Return! 2 - Udi Harpaz [Patrick talks about the Battle of Bikini Bottom] ‣Steel Sting - Jeremy Wakefield ["Ugh! That's not what happened!"] ‣Gator - Steve Belfer [flashbacks] ‣Seaweed - Steve Belfer ["Well, then, I guess we can't be friends."] ‣Colonial March - Larry Hochman ["I am joining the other side!"] ‣Grass Skirt Chase - Sage Guyton, Jeremy Wakefield [SpongeBob gives Patrick a pedicure] ‣ ? [harp music] ‣Skipping to School - Sage Guyton, Jeremy Wakefield [Patrick's morning breath] ‣Grass Skirt Chase - Sage Guyton, Jeremy Wakefield [SpongeBob brushes Patrick's teeth] ‣The Jitters - Raymond C. Jones [deodorant spray] ‣Hawaiian Link (b) - Richard Myhill ["My beautiful pit stink... it's gone!"] ‣Team Trophy - Sammy Burdson, John Charles Fiddy ["It's booger time!"] ‣Drama Link (d) - Hubert Clifford [Patrick picks his nose] ‣Inferno - Fredric Bayco [Patrick chasing SpongeBob] ‣Vibe Sting - Nicolas Carr ["Gold?!"] ‣Steel Sting (a) - Jeremy Wakefield ["Did you get any of Patrick's gold?"] ‣Inferno - Fredric Bayco [SpongeBob throws onions at Patrick] ‣ ? ["That does it!"] ‣Hawaiian Party - Jan Rap, Peter Smid [patty socks] ‣Tension Bits - Nicolas Carr, Sage Guyton, Jeremy Wakefield ["Grrrrr! You stop that right now!"] ‣Sponge Monger - Sage Guyton, Jeremy Wakefield [Patrick throws dumpster at SpongeBob] ‣Steel Licks (d) - Jeremy Wakefield ["I'm covered in muck and scum!"] ‣Vibe Q Sting - Nicolas Carr [SpongeBob, Patrick thinking] ‣You're Nice - Sage Guyton, Jeremy Wakefield ["All right!"] ‣Royal Wedding - Harry Bluestone, Emil Cadkin [SpongeBob's speech] ‣Puka A - Sage Guyton, Jeremy Wakefield [ending]
In "Krusty Krab Training Video," the narrator mentions a war that occurred some time ago. This episode might have occurred during this war.
In the flashback, the person who represented being dirty in the bathroom looked and sounded just like Patrick. He may either be an ancestor of Patrick, or a good enough person to show how dirty they were.
In this episode, Patrick says he has never washed his hands. However, in the episode "Something Smells," Patrick is seen washing his hands in the movie theater bathroom. It's possible that "Something Smells" takes place after this episode.
The closeup of SpongeBob's teeth was featured in the SpongeBob online game: Cavity Crisis.
It is shown SpongeBob may want to physically hurt Patrick since when they were fighting in the Krusty Krab, SpongeBob might have looked at the knife before choosing to throw the onions at Patrick.
Patrick's feet should not have been harmed by the Krabby Patty as they were already cooked patties.
The soap that SpongeBob raises in the air looks like the soap in the first movie.
Patrick has been clean in other episodes (such as "Shanghaied") and SpongeBob dirty in other episodes ("Gary Takes a Bath"). Though, that is possible due to the aftermath of this episode.
In this episode, it shows that Patrick's eyes are navy blue. Although, in "Wormy," his eyes are green, and in "Oral Report," they are jade. It is possible that his eye color varies between episodes, like his stupidity, as revealed by Patrick in "Tentacle-Vision."
This is the second episode to have a title card background on a pirate map. The first was "Arrgh!"
In Indonesia, the flashback of ice cream is cut for unknown reasons.
If counting this episode segment and its sister in one episode instead of separate segments, the previous and next episodes are both specials in-between this episode.
The Battle of Bikini Bottom could be a parody of the Revolutionary War, judging from the military uniforms. The red-coated soldiers have British accents in the flashback, and the blue coats have American accents. This is a reversal of the actual war, in which the Patriots wore blue, and the British wore red.
In the scene with the Bikini Bottomites firing with their cannons, certain trash lands in the air, so it appears floating.
As Bill says "That's not what happened." one of Patrick's eyebrows are missing until he turns his head.
In one scene, SpongeBob's eyelashes disappear for a split second.
After SpongeBob pedicured Patrick, the chair and bucket of water in the background disappears.
SpongeBob also painted Patrick's toe nails red. After he turns to SpongeBob and says "You sick little Monster!" and "Feast my morning breath!" the red nail polish is gone.
If one listens closely as Patrick loses his armpit hair, one can hear him coughing and choking even though his mouth does not move.
On the DVD release, if one plays it frame by frame, during the scene when Mr. Krabs runs into the kitchen looking for gold, they can see the door actually opened before Mr. Krabs pushed it.
When Patrick says "Hopping... clams!" the captions say "Hopping... crabs."
On The First 100 Episodes Disc 13, it lists this episode as "Battle of Bikini Bottom" without included the word "The" in the title.