- Patrick Star
- SpongeBob SquarePants
- Janet (Single appearance)
- Marty (Single appearance)
- Gary the Snail (cameo)
- Squidward Tentacles (cameo)
- Herb Star (debut)
- Margie Star (debut)
SpongeBob, hoping to go jellyfishing with Patrick, finds him frantically cleaning up his home and making furniture out of sand. In distress, Patrick informs SpongeBob that the following day is Starfish Day, and his parents are planning to visit. Patrick sadly reveals that his parents consider him to be quite unintelligent, and he can't bring himself to face their condescension. Patrick and SpongeBob come up with a plan: SpongeBob will act like an idiot so Patrick's parents will see their son as comparatively smarter, which Patrick readily accepts.
The next day, a married starfish couple arrives at Patrick's house, and Patrick thinks they are his parents. Patrick shows them inside his house, where they proceed to treat him like a child after he brings them drinks. SpongeBob soon makes his entrance, wearing his karate helmet to look stupid and acting in a strange manner. As Patrick's parents look upon SpongeBob's peculiar antics, they start to give Patrick a lot more credit for keeping his supposedly stupid friend in check.
At dinner, as SpongeBob's shenanigans escalate, Patrick begins to lob personal insults at him for his parents' amusement. This annoys SpongeBob so much that he brings Patrick to the kitchen to talk. As it turns out, Patrick has begun to forget that SpongeBob is only pretending to be an idiot, now believing that SpongeBob really is stupid.
SpongeBob confesses to Patrick's parents that he is not really an idiot and was only behaving like one so that they would appreciate Patrick more. This also fails, as Patrick's parents think that Patrick coached SpongeBob into mimicking basic skills such as talking in complete sentences and even math. Their derision and laughter bring SpongeBob to the limits of his patience, driving him to scream at the top of his voice and crash through the wall in Patrick's house to get out.
With no "idiot" present, Patrick's parents commend him on his newfound intelligence, and accidentally reveal themselves to be two random starfish named Janet and Marty. Patrick, confused and outraged, realizes that they are not his real parents, and demands to know who these strangers are. All of a sudden, Squidward comes to Patrick's house with two other starfish, who have been asking him for Patrick all day which has been driving Squidward nuts. Patrick happily recognizes the starfish couple as his real parents, and they are happy to see him as well, especially with his pants on. Janet and Marty then remember that they don't even have a son, and they leave Patrick to share a laugh with his real family, just as the rock slams shut on top of them while the episode ends.
|( ‣ ) Associated production music|
|( • ) Original music|
|( ◦ ) SpongeBob music|
‣ Flop and Go A - John Fox [title card]
‣ Hawaiian Link (b) - Richard Myhill [opening]
‣ Dramatic Climax - Mike Sunderland [Patrick mocks SpongeBob]
‣ Fates [#62] - Gregor F. Narholz [Patrick cries]
• ? Vibes - Nicolas Carr ["A note!"]
‣ Hawaiian Happiness - Jon Jelmer [message from Patrick's parents]
‣ Me for You - George Callert [Patrick's parents arrive]
• SpongeBob Closing Theme - Steve Belfer, Nicolas Carr [SpongeBob acting stupid]
• 12th Street Rag - Sage Guyton, Jeremy Wakefield ["Does he always do that after he eats?"]
• Steel Licks 4 - Jeremy Wakefield [box-chested]
• Solo Steel 3 - Jeremy Wakefield ["Hey, Patrick!"]
• Gator - Steve Belfer [Patrick thinks SpongeBob really is stupid]
‣ Hawaiian Breeze - Jon Jelmer [SpongeBob confesses]
• What's Up - Nicolas Carr [picture of SpongeBob's brain]
‣ Flop and Go A - John Fox [Patrick and his parents laughing at SpongeBob]
‣ Crocodile Tears A - David Bell, Otto Sieben [after SpongeBob leaves]
‣ Dramatic Cue (a) - Ronald Hanmer ["Janet? Marty? Who are you people?!"]
‣ Hilo March - The Hawaiian Serenaders [ending]
- This episode is available on the SpongeBob Goes Prehistoric, Complete 2nd Season, Nick Picks Volume 2, Nickelodeon Double Feature, Nick Picks Box-Set (Vol, 1-3), The Ultimate Box Set, Two Salty Episodes!, First 100 Episodes, Exposed!: The Ultimate Box Set, SpongeBob's Legendary Adventures, I'm with Hazo, The Ultimate SpongeBob Box Set, SpongeBob SquarePants Vol. 3, Complete Second Season, Patrick's Day, From the Beginning, Part 1, The SpongeBob SquarePants Collection, SpongeBob and Friends: Patrick SquarePants, The SpongeBob SquarePants 8 Season DVD Collection, Favorite Episodes, Triple Pack 4, The First & Second Seasons, Big Hits: Volume 2, and The Best 200 Episodes Ever DVDs and on VideoNow.
- This episode is also available on the SpongeBob Goes Prehistoric VHS tape.
- Apparently, Patrick has forgotten how to eat in the past, as evidenced by SpongeBob saying, "Patrick! You've forgotten how to eat again! Come on, we'll get the funnel." Patrick informs him that is not the problem, to which SpongeBob responds, "Darn, I like the funnel."
- In addition, an image in "Grandma's Kisses" shows Patrick feeding SpongeBob a pumpkin through a funnel.
- Thomas F. Wilson and Susan Boyajian voice both Patrick's fake parents, Marty and Janet, as well as his real parents, Herb and Margie.
- This was the last episode to premiere during the Totally Twisted Telly event.
- Marty and Janet seem just as stupid and unintelligent as Patrick. They forgot the obvious fact that they do not even have a son, and like Patrick, they do not realize that SpongeBob was not dumb when he admitted it.
- Patrick, however, could be slightly smarter than Marty and Janet because he knows that his parents' names are not Marty and Janet unlike Marty and Janet who somehow know Patrick's name even though they are not his real parents.
- This episode marks the first appearance of Patrick's furniture made out of sand.
- Innuendo: Patrick grabs a column of sand and starts licking it to make a lamp.
- This marks the only episode in the second season to play the track "Hawaiian Happiness."
- In Croatian dub, the episode's title is "Tko je Glup?" or "Who is Stupid?."
- Patrick's line "Who are you people?" is recycled from "Prehibernation Week."
- Patrick mistakes the word "genius" for "genies," thinking that "genius live in lamps." However, in "Christmas Who?," he uses the word "genie" correctly.
- In the Indonesian dub, instead of saying, "Patrick! You forgot how to eat again! Come on, we'll get the funnel," SpongeBob says, "Patrick! You forgot how to clean your ears again, don't worry we'll get the stick."
- When SpongeBob turns over the note, a 16th note can be seen. When he turns over the letter, the letter B can be seen. However, both symbols face away from SpongeBob as he remarks on them.
- Foreshadowing: Gary asks SpongeBob if it is okay for him to look stupid and SpongeBob asks him what could go wrong. This foreshadows Patrick treating SpongeBob like a real idiot.
- Marty appears to have knowledge of an electrician, as shown by his quotes as follows:
- After SpongeBob makes electrical buzzer noises, Marty asks Patrick if SpongeBob is "broken."
- When SpongeBob is tensing up when he is fed up with Marty's bullying, he says, "Oh, now he's short-circuiting!" because Patrick, "taught him too much!" "Short-circuiting" is a term used when a low-resistance circuit is flowing current far too quickly, making the battery heat up far too quickly.
- After SpongeBob runs off annoyed, Marty talks about Patrick's brightness being a "3-watt [lightbulb]," while he says SpongeBob's brightness makes, "phone operators seem smart."
- SpongeBob indirectly breaks the fourth wall when he states that Patrick is too busy having an episode, since episode also means having an event.
- This episode and its sister episode were rated 13+ on Amazon Prime Video in August 2020, possibly relating to the restoration of deleted scenes in "Procrastination" that were cut from broadcasts between 2005 and 2019.
- This has since been corrected as of October 2020, and the episode is back to being rated its original TV-Y7 rating on Amazon Prime Video, like most other episodes.
- At the beginning of this episode, Patrick's rock is a 3D model.
- During the Yo Mama's Day event, this episode was paired with "Grandma's Kisses" as they are both parents-themed episodes.
- The title is a reference to the eponymous phrase seen on novelty T-shirts to insult one's partner.
- Since May of 2005, this episode and its sister episode appears to be washed out and less saturated on Nickelodeon, appears washed out and less saturated on airings on Nickelodeon, Nicktoons (until October 2019), and Teennick. The desaturation and loss of sharpness could have occurred during the copying process when three scenes from the previous episode were cut, though this theory remains unconfirmed. Though digital version of this episode is currently available on Amazon, iTunes, and Paramount+, and airings on Nicktoons after October 2019.
- For many years, this episode's air date was incorrectly listed as November 30, 2001 on websites like Wikipedia and IMDb.
- iTunes and Amazon episode lists provided the correct air date.
- There are quite a few errors in this episode regarding Patrick's house:
- In this episode, Patrick's house comes with a complete living room and kitchen. However, in most other episodes, Patrick's house is just one giant room under his rock.
- At the beginning, Patrick is shown making pieces of furniture out of sand. However, by the time SpongeBob leaves, all the sand furniture in the house disappears.
- When SpongeBob is mad at Patrick, Marty, and Janet, he leaves Patrick's house by running through the wall. He also leaves a hole in the wall, and behind the hole is the sky. However, Patrick's house is set underground.
- The depth of Patrick's house changes throughout the episode.
- At the beginning, Patrick's floor is deep enough into the ground that the top of SpongeBob's head is level with the ground outside.
- When Patrick's "parents" show up, they are about two and a half times as deep into the ground as before.
- When Squidward and Patrick's real parents show up, the floor is only about half a foot deep into the ground.
- At the very end, the floor is perfectly level with the ground outside.
- The sound of a doorbell can be heard when Patrick's "parents," SpongeBob, and Squidward all show up at Patrick's house. However, Patrick's house does not have a doorbell.
- Squidward comes to Patrick's house to bring Patrick's real parents to him, but when Patrick hugs his parents, Squidward is gone.
- When SpongeBob runs into his house as a portrayal of his stupidity, Squidward's house is not there. When Patrick, Janet, and Marty are talking by SpongeBob's pineapple house, Squidward's house disappears again.
- When Marty, Patrick, and Janet are watching SpongeBob doing various things, there is a table with dinner. After Marty says that SpongeBob might be broken, the table and the food disappear.
- In American TV airings and digital releases of this episode, Ennio Torresan, Jr. is credited as a storyboard artist.