Brain tells Arthur that his sentence, "No one is ever right about everything" is poorly constructed because using both "ever" and "always" is redundant, but Arthur didn't use the word "always" in that sentence.
This is the second Arthur story that involves D.W. getting the hiccups, and Arthur trying to cure her, the first being "Arthur vs. the Piano."
In "D.W. All Wet," Arthur was successful in scaring D.W. in the bath, with a toy spider on a string that he said was an octopus.
The octopus that Arthur makes to scare D.W. in "Hic or Treat," is of a balloon with pipe cleaners sticking out of it, but sticking pipe cleaners in a balloon would pop it.
The Halloween costume ideas the characters come up with in "Hic or Treat" are as follows:
• Arthur --- Frankentist (half Frankenstein, half dentist)
• Francine --- a prom queen
• Buster --- Candy Boy
• Brain --- the 14th century (a medieval castle surrounded by serfs, etc.)
Postcards from You: The first postcard is from Harvard Kent School in Charlestown, Massachusetts. When a girl eats too much junk food and gets a stomachache, "Captain Nutrition" and "Fitness Queen" come to save her. The second postcard is from the Boy's and Girl's Club in Lewiston, Idaho. A group of kids go out for a nature walk and discuss types of birds. One of them then finds some animal fur, which they try to identify.
Binky reads the title card for "Hic or Treat." It's the one where D.W. searches around the title card for Arthur and shouts his name, then he appears in the card and says "Shh!" Francine reads the title card for "Mr. Alwaysright." It's the one where a UFO appears, then when it opens up, it's Buster inside.
In "Hic or Treat," D.W. comes up with a list of four things that she's afraid of in the hopes that Arthur can use it to scare her out of her hiccups. The list is as follows:
1. Dark Bunny
3. Gingerbread men cookies
4. Losing her stuffed unicorn Uni to the Tibbles
Chorus of Ladies: (in Buster's fantasy sequence) These answers he's making / They're never mistaken / He's Mr. Alwaysright!
Elderly Buster: I'll get you yet, Mr. Alwaysright.
Buster: (pinching his nose) Um, you have been randomly selected to win a prize if you can correctly answer this question --- what is the square root of 1,764?
Brain: Buster, why are you calling me at 9:30 at night?
Buster: Uh... sorry. Wrong number.
Buster: (regarding Brain) Once, just once, I'd like to see him be wrong.
D.W.: At least I don't need a Halloween costume this year. (hiccups) I can just go as Hiccup Girl. (hiccups)
Arthur: That's pretty scary, I have to admit.
Arthur: What?! This can't be right. (reads from television magazine) Friday on Dark Bunny --- Mary Moo Cow pays the Bad Bunny a visit.
Arthur: Before we start, do you need your blankie?
D.W.: My blankie bit the dust a long time ago.
Arthur: D.W., why can't you be scared of normal stuff like aliens and cobwebs?
Mary Moo Cow: 1+0 is what?
Arthur: Scaring people on Halloween is an important tradition. Plus it's fun.
Kathy Waugh is the writer for "Hic or Treat" and Robert Yap is the storyboard artist. Peter K. Hirsch is the writer for Mr. Alwaysright and Jeremy O'Neill is the storyboard artist.
In "Hic or Treat," Brain mentions Charles Osbourne, a man who hiccuped for 68 years, from 1922 to 1990.