Hey Arnold!

Parents Day - S5-E6

Other mistake: After Grandpa knocks Bob into the gelatin, Arnold and Grandma run up to Grandpa. In the next shot, Arnold's left side hair has five spikes instead of four like it should. (00:21:55)

zenee

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Parents Day - S5-E6

Continuity mistake: During the triathlon, Miriam and Grandma climb up the ropes of the brick wall, but when they both get to the top, the ropes have vanished. (00:20:36)

zenee

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Parents Day - S5-E6

Continuity mistake: When Miriam and Grandma are climbing up the ropes of the brick wall, there is no one standing on the balance beam above the gelatin, but when they ride the zip lines, Bob and Grandpa are suddenly standing on it. (00:20:42)

zenee

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Married - S5-E16

Continuity mistake: At the start, Lila is sitting on a bench near the school wall. However, in the shot where Sheena says, "Oh, that's wonderful," Lila and the bench are missing; then they reappear a moment later. (00:01:13)

zenee

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Grandpa's Packard / Phoebe's Little Problem - S5-E19

Other mistake: Phoebe's Little Problem: When Arnold goes into Phoebe's room to cheer her up, the birdcage is reflected in the mirror on the wall, but the birdcage is too far to the right of the mirror, so it shouldn't be reflected. This error is shown again in a later shot where Phoebe tells Arnold, "And I'm very good at checkers." (00:09:13 - 00:09:45)

zenee

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Sid the Vampire Slayer / Big Sis - S5-E3

Other mistake: Sid the Vampire Slayer: While Sid stands in front of the mirror and points his rubber sword at Arnold and Stinky, the two ghoulish vampires, Arnold asks him, "How can we be vampires if we have reflections?" So when Sid is aware of his mistake, Arnold's eyes disappear and reappear in his reflection mid-shot.

Super Grover

Grandpa's Packard / Phoebe's Little Problem - S5-E19

Continuity mistake: Phoebe's Little Problem: When Phoebe tells the lunch lady what she wants and she questions her choices, the lunch lady is standing behind the counter, as she should be. When she is shown again two shots later, she is standing in front of the counter, when she should be behind it. (00:04:03)

zenee

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Helga's Locket / Sid and Germs - S5-E7

Other mistake: Helga's Locket: When Helga climbs to the top of the boarding house and looks at Arnold and Grandpa through the window, as Arnold tells Grandpa, "It's embarrassing and weird," Helga's left sleeve is incorrectly coloured pink instead of white. (00:09:02)

zenee

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Monkeyman! / Buses, Bikes and Subways - S5-E1

Continuity mistake: Buses, Bikes, and Subways: Helga wears a watch on her right arm throughout the episode. However, when Helga approaches Sheena's uncle Earl and wakes him up, her watch is missing, then reappears when Earl's boat sinks. It disappears again when Helga comes up from the water, then reappears a moment later. (00:18:59)

zenee

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Parents Day - S5-E6

Continuity mistake: During the flashback, when little Arnold says goodbye to his parents, in the next shot of Stella and Miles, the bag's strap is slung over his dad's left shoulder as a crossbody, but mid-shot, the strap switches to his right shoulder with the bag on the opposite side. (00:14:30)

Super Grover

Hey Arnold! mistake picture

Parents Day - S5-E6

Continuity mistake: When Grandpa enters and exits Arnold's bedroom, the door opens the opposite way in various shots, with the doorknob on either the left or right. Additionally, the light switch beside the door appears and disappears, between shots.

Super Grover

Married - S5-E16

Character mistake: The first time Arnold tries Rhonda's marriage predictor test, he says his favorite number is five, but Rhonda actually makes six moves. The second time, Arnold says it's three, but Rhonda counts off four.

AidanN

The Aptitude Test / Oskar Gets a Job - S3-E9

Suzie: I gave you 100 dollars two days ago.
Oskar: Suzie, you know I had to use it to pay the phone bill.
Suzie: Oskar, they cut off our phone service this morning.
Oskar: I know, it's a terrible mistake. We should sue.
Suzie: Oh, Oskar, that just doesn't make any sense.
Oskar: Tell me about it. So, can I have the 50 dollars?
Suzie: I don't have 50 dollars, we've already spent my paycheck this week.
Oskar: What about your overtime?
Suzie: I work 20 hours a week overtime already, how many more hours do you want me to work?
Oskar: How about 25?
Suzie: OSKAR!

zenee

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The List/Haunted Train - S1-E8

Question: Why did that boy steal Arnold's ball? Was that the whole reason he came to the park? He seemed awfully obnoxious and destined to ruin Arnold's day, just wanting more clarity. Thank you.

Answer: The episode doesn't really elaborate on who the kid was and what his motives were, so its pure speculation as to why he took it. Perhaps the kid could simply want a ball all for himself and decided to just take it, or was simply a rotten kid. The truth is the kid's motives are not important to the story other than it highlights Arnold was having a lot of trouble getting through the list.

Lummie

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