- John (cameo)
- Martha Smith
- Tina Fran
- Jimmy Gus
- Frankie Billy
- SpongeBob SquarePants
- One of Howard Blandy's partners
- Nancy Suzy Fish
- Harold Bill Reginald Scott (cameo)
- Nat Peterson
- Abigail Marge
- Fred (normal; blue; green)
- Howard Blandy (cameo)
- Patrick Star
- Sandy Cheeks
- Eugene H. Krabs
- Pearl Krabs (voice only)
- Grandma SquarePants
- Gary the Snail
- Abrasive SpongeBob (debut)
- Alternate-Universe Abrasive SpongeBob (debut)
- Ivy (cameo)
- Larry the Lobster
- Dave, Frank, Percy, Isabelle, Harold
- Nathiel Waters
- Norma Rechid
- Monkey (mentioned)
- Squidward Tentacles
- Chimpmunk (mentioned)
- Jellyfish (mentioned)
- Electric eels (mentioned)
- Fish in photo at Grandma SquarePants' house
- Abrasive Grandma (debut)
SpongeBob is waiting at the bus stop to go to Glove World! A fish steps on SpongeBob's face, not realizing he was there since he was sleeping on the ground. SpongeBob informs him of this and he steps off his face. SpongeBob tells him he spent the night there, so he would be first in line as he promised Patrick that they would be first in line, and first to get on the bus. The man says "Hmm, interesting stuff. Say, do you mind if I cut in front of you?" SpongeBob tries to say no, but he ends up letting the fish cut him anyways, making him behind the other fish. Then a lot of fish come and cut in front of him. Patrick comes and asks SpongeBob why he is not first (like he promised). SpongeBob says he's sorry but they'll still be able to catch the first bus. Patrick, now no longer mad at SpongeBob for breaking his promise, becomes happy, and the bus comes, so they run to it.
They almost get in the bus, but then Sandy comes and asks SpongeBob for him to do "Operation: Acorn Smoothie." SpongeBob says no but after a guilt trip from Sandy, he unhappily agrees. He tells Patrick he'll be on the next bus, so Patrick goes to Glove World! without SpongeBob. After the situation with Sandy, he goes back to the bus stop, then Mr. Krabs asks SpongeBob to say no to Pearl about the new shoes that she desperately wants.
Afterwards, he goes back to the bus stop and his Grandma asks him to help her cross the road. SpongeBob, as usual, says no but then his guilt trips into helping anyways. Patrick returns and is mad at SpongeBob for making him go to Glove World! by himself. SpongeBob says he's sorry but people kept asking him to do things. Patrick tells SpongeBob that sometimes he just has to say no, and he needs to grow thicker skin, then it reminds him to ask SpongeBob to scratch his back, which SpongeBob does.
Later, he is shown at his house crying to Gary about how he can't say no to anything anyone asks him. Gary then goes to a catalog and orders something for SpongeBob, it arrives and it shows that the package was a thing called 'abrasive sponge" which is an abrasive side designed for doormat sponges to stick on their back, and the abrasive side will help them be more tough. SpongeBob feels this is perfect for his situation, so he sticks it on his back. The abrasive side makes a cruel remark at Gary which SpongeBob is unaware of, so he happily tells Gary he'll see him later.
He goes out and Pilar asks him to carry his groceries for him. His body switches 180 degrees, showing the abrasive side, and says "Carry it yourself, fish-face" for SpongeBob. He does the same for Larry who asked him to help him put sun lotion on, Grandma who asked for help crossing the street, and Sandy who asked him to help her with a science invention. All of them getting harsh words thrown at them from SpongeBob's abrasive side leave, either baffled, hurt, or in Sandy's case, baffled, hurt, and physically damaged.
He then goes into the Krusty Krab, where Mr. Krabs asks him to do a seventeen-hour extra shift. SpongeBob says yes, but then his abrasive side says no, unless Mr. Krabs pays for overtime, Mr. Krabs is confused for he never heard this word before, so he goes into his office and looks it up on a dictionary. He finds out it means "being paid more than the standard wage for coming in over his contracted hours." He is shocked that SpongeBob could use such a "disgusting" word. He goes home and Squidward sarcastically says "Oh goody! I suppose you're going to ask me to play some stupid game or follow me around all day!" SpongeBob's abrasive side says the complete opposite that SpongeBob would normally say which is "Afraid not big nose, I wouldn't hang out with you for all the money in Krabs' mattress!" then Squidward gets happy and hugs him, saying: "You don't know how long I have waited to hear those words." Patrick says it's time for their play-date.
SpongeBob talks and so does his abrasive side, over and over, confusing Patrick. He gets scared and sad of SpongeBob's abrasive side and runs away crying. SpongeBob is confused but goes into his house and goes to the bathroom and stares into the mirror, and realizes what's wrong — and that his abrasive side is getting out of control. He asks Patrick for help, but the abrasive side scares him away again. SpongeBob then goes to Mr. Krabs for help, who is still cowering at the word "overtime." The abrasive time takes over and tells Mr. Krabs he wants overtime. He then kicks out SpongeBob until he can "swap that poop deck you call a mouth." He goes to Sandy for help (he even made her head grow back with a pull of a string after her science invention made it pop like a balloon), then explains what happened and why he got an abrasive side.
Sandy then rips it off his back, while SpongeBob holds Patrick, then it is shown with intense pain for a short while as Sandy rips the abrasive side off. Sandy puts it in a box labeled "Return to sender" and puts it in the mailbox. The green skin growls. SpongeBob then remembers he needs to apologize to Grandma for what happened earlier. He goes, then it turns out that Grandma has the abrasive side now too, much to SpongeBob's horror. The episode ends with SpongeBob screaming "No!"
|( ‣ ) Associated production music|
|( • ) Original music|
|( ◦ ) SpongeBob music|
• Clownfish Capers - Sage Guyton, Jeremy Wakefield [Title card]
‣ City Dash - Harry Lubin [traffic]
• Cream Pie - Sage Guyton, Jeremy Wakefield ["I spent the night! That's how you get the best spot around here!"]
‣ Lite Conversation - Nicolas Carr, Barry Anthony [people cutting in front of SpongeBob]
‣ Salty Krab Jig - Michael Bolger, Nicolas Carr [Krabs appears]
‣ Drama Link (e) - Hubert Clifford [Pearl's tears flooding the street]
‣ At the Zoo - Gerhard Trede ["Help your granny cross the street, hm?"]
‣ Steel Licks (b) - Jeremy Wakefield ["Hello, SpongeBob."]
‣ Steel Licks (d) - Jeremy Wakefield ["I tried, how I tried! But everyone needed my help and I, uh..."]
‣ Steel Sting - Jeremy Wakefield ["Can you scratch my back?"]
‣ Hawaiian Cocktail - Richard Myhill [SpongeBob crying at home]
‣ Dancing the Hula - Kapono Beamer [Gary makes a phone call]
‣ Befuddled Gent - Phil Green [industrial size abrasive sponge]
‣ Gag 12 - Zbigniew Wiszniewski ["Why don't you scram, you little freeloader?"]
‣ Lap Steel - Nicolas Carr ["See you, Gary!"]
‣ I've Got an Abrasive Side - Nicolas Carr ["I've got an abrasive side..."]
• You're Nice - Sage Guyton, Jeremy Wakefield [abrasive side insulting people]
‣ Spindlelegs - Cedric King-Palmer ["Hey, Grandma."]
‣ Befuddled Gent - Phil Green ["Sorry, Granny. Why don't you walk yourself across the street?"]
‣ A Jolly Jaunt (a) - Dick Stephen Walter [SpongeBob visits Sandy]
‣ Shock Headed Peter - Ronald Hanmer [abrasive side insults her]
‣ The Tip Top Polka/The Cliff Polka - Chelmsford Folk Band [at the Krusty Krab]
‣ Down in Davy Jones' Locker - Nicolas Carr ["Sorry, Krabs, I'm busy. Unless you're paying me overtime."]
‣ Daily Chores Jig - Michael Bolger, Nicolas Carr [Krabs looks up "overtime" in the dictionary]
‣ Dramatic Impact 3 - Ivor Slaney [Krabs screams]
‣ Boring Morning - Nicolas Carr, Steve Marston ["Oh, fine. I suppose you want me to play some stupid game, or you'll just follow me around all day and never ever leave, huh?"]
‣ Comic Walk - Nicolas Carr [abrasive side insults Squidward]
‣ Synopsis - Frank Harlow [Squidward hugs SpongeBob]
‣ Gator - Steve Belfer [Patrick appears]
‣ Sneaking About - Phil Green [abrasive side insults Patrick]
‣ Cloak and Dagger [#69] - Phil Green [Patrick cries]
‣ Harry the Hippo - Phil Green ["Don't you remember? We told that pink freak to beat it!"]
‣ Cloak and Dagger [#70] - Phil Green [SpongeBob gasps]
‣ Unsettled Menace - Phil Green ["Yes, Patrick! Help me get this abrasive side off my back!"]
‣ Tragic Bridge 4 - Phil Green ["It happened again!"]
‣ Steel Licks - Jeremy Wakefield [Krabs still reading the dictionary]
‣ Dramatic Bridge 1 - Phil Green ["Mr. Krabs! Mr. Krabs!"]
‣ Dramatic Impact 6 - Ivor Slaney [Krabs gasps]
‣ The Drunken Sailor - Krabs kicks SpongeBob out
‣ Tragic Bridge 2 - Phil Green [SpongeBob goes to Sandy for help]
‣ What's This Sting - Nicolas Carr ["Huh?"]
‣ Steel Sting (j) - Jeremy Wakefield ["Well, I just couldn't say no to anybody."]
‣ Watch Out! - Dick Stephen Walter ["Who he is just stinks!"]
‣ Drama Link (b) - Hubert Clifford [Sandy removing the abrasive side]
• Tentically Speaking - Sage Guyton, Jeremy Wakefield ["All done!"]
‣ Spindlelegs - Cedric King-Palmer [SpongeBob visits Grandma]
‣ Shock (f) - Dave Hewson ["Make your own hot cocoa, I'm busy!"]
‣ Nude Sting - Nicolas Carr [SpongeBob screams]
- This episode is available on the Complete Seventh Season, SpongeBob on Tour, Glove World Forever!, and Next 100 Episodes DVDs.
- This is the third appearance of SpongeBob's grandma after "Grandma's Kisses" and "BlackJack."
- The scene where Squidward said "You don't know how long I've waited to hear those words!" is sped up in the promo.
- SpongeBob tells Squidward that he wouldn't hang out with him for all the money in Mr. Krabs' mattress. This is a reference to the episode "The Lost Mattress," since that episode reveals that Mr. Krabs keeps his money in his mattress.
- This is the second episode where Sandy is called a chipmunk. The first is "Someone's in the Kitchen with Sandy."
- This is the second episode where Patrick thinks SpongeBob doesn't like him anymore due to a misunderstanding. The first episode was "Opposite Day."
- This episode was originally going to be paired up with "Enchanted Tiki Dreams," but ended up being paired up with "Earworm."
- Howard Blandy makes a cameo appearance standing in front of SpongeBob in line.
- SpongeBob's Abrasive Side speaks with a stereotypical New Jersey accent.
- Two versions of SpongeBob are available as playable fighters in Super Brawl 3; Normal SpongeBob and SpongeBob with the abrasive side, named Abrasive SpongeBob.
- This, along with its sister episode, "Earworm," both involve something attached to SpongeBob's body but was later removed near the end. For this episode, the abrasive side is found in SpongeBob's back, and in "Earworm" inside (internal) SpongeBob's ear whereas in the latter's case as well as both episodes ending in characters screaming.
- Even though Mr. Krabs says the word "overtime," in "Enemy In-Law," he acts as if he just heard the word. Therefore, this must be before the aforementioned episode.
- The fact SpongeBob saying he never used immoderate language is incorrect since he used "number 11" a couple of times in "Sailor Mouth." He says it again in "SpongeBob's Big Birthday Blowout," and is aware that it is bad language.
- This means this takes place after that episode as SpongeBob learns swear words in "Sailor Mouth."
- Despite the episode's premise about SpongeBob not being able to say "no" in this episode, he was able to say "no" to Pearl in the shoes store.
- This episode sort of has the same storyline in the beginning to "Rock Bottom," where SpongeBob keeps missing the bus.
- This episode and "Blackened Sponge" both end with SpongeBob saying "No!"
- This episode premiered one year after "Greasy Buffoons" and "Model Sponge."
- This episode premiered in the UK four years after "Wigstruck" premiered.
- This episode marks the fourth time Patrick is called "Tubby," following "No Weenies Allowed," "Chocolate with Nuts," and "SpongeBob Meets the Strangler."
- This is one of the only episodes, if not the only episode, to feature Wobbles without his hat.
- At one point, when SpongeBob is talking to Patrick, part of one of his blue eyes turns red for a split-second.
- Patrick's eyebrows disappear for a fraction of a second when he is about to show his half-gone finger.
- When Sandy rolls up the sleeves on her suit, there is black hair on her arms even though she already has fur.
- When Pearl cries, her tears leaves puddles. When SpongeBob's grandma asks to help her cross the street, the puddles disappear.
- The overtime Mr. Krabs said about (More money per hour) is not the real overtime definition. "Overtime" actually refers to the payment of time worked beyond someone's work hours.
- When the dictionary is open, the word "more" is missing from the definition of "overkill."
- When the dictionary is open, the left side of the book is incomplete.