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The day after release was April Fools Day. Due to the high expectations for this episode, released more than three months after the previous one, the tag "thomas sanders" surpassed the "april fools" tag and became the top-1 trending topic on Tumblr.
The name of the fictional director of the movie Thomas was going to appear in if he was chosen in his callback is Alfred Hitchcoppolucas, which is a contraction of the names of legendary directors Alfred Hitchcock, Francis Ford Coppola and George Lucas. The fictional movie Roman cites from this director, "Psycho Godfather Wars" is also a contraction of three titles, one of each of these three directors, Psycho (1960), The Godfather (1972) and Star Wars: Episode IV - A New Hope (1977). That title was improvised and added to the script on the fly by Joan S. while they were filming.
The costume design for the episode was highly praised by viewers, in particular because of the little details. Thomas at the beginning is wearing a polo shirt decorated with a pattern of flowers, like the ones he uses to wear. When he's shifted to the Mind Palace, his outfit is changed to a suit where the necktie has a very similar pattern of flowers like the polo shirt he was wearing earlier. Virgil wore a necktie that matched his usual patched purple jacket and that was handmade by the costumers of the episode. Patton wore a full suit that matched the color key of his usual outfit, with a light blue shirt and a gray jacket and necktie, but the waistcoat attracted attention for being of cream color, which is gray leaning towards yellow, and that color in his outfit had a significant metaphorical meaning on the plot.
On the day of release, Joan S. said that the team originally intended to title the episode as "Selfishness v. Selflessness Part 1/2", as the story would be continued in a following episode, but since there was going to be a different episode between the two parts of the story, they decided to drop the part numbering to avoid confusion.
The red sash that Roman wears in his judge tunic costume is the same red sash he used to wear in his old season 1 outfit. Also, the necktie that Deceit wears when impersonating Logan at the beginning is Logan's old season 1 plain blue necktie.
First "Sanders Sides" installment that features a scene filmed in Thomas Sanders' office. In the opening sequence where Virgil appears in front of the camera with Thomas scolding him behind him, Virgil's part was filmed in the office's green-screen mini studio, then Thomas' part on the habitual apartment, and both shots were combined using the chroma-key effect. Although other of Thomas' productions have already started the phasing out of the apartment as the main location and have started being shifted to the office, it had already been announced that the apartment would remain being the main location for "Sanders Sides" indefinitely.
With 44:35 minutes of length, this marks a new record for the longest "Sanders Sides" episode, this time including 2-part stories.
When Deceit makes Thomas and the other Sides swear to tell the truth, all the truth and nothing but the truth, Thomas swears on a regular Bible, Patton on a Youth Bible, Roman on a VHS of Pinocchio (1940), Logan on a copy of "Grand Design" by Stephen Hawking, and Virgil on a book of Fairy Tales by the Grimm's Brothers.
In order to have the episode ready as soon as possible, Thomas Sanders spent 36 consecutive hours editing the episode without sleep, stopping only to take a shower as he said. When the editing was over and the episode released, Joan S. came over to his house to bring him some vegan food (Thomas himself is not vegan, but Joan is), knowing how much time he had worked without rest and knowing he would be exhausted to make something for himself. Still, he gathered all the energy he had left to get out and record Sanders Shorts: Shoutout Sunday: Mara & Maura (2019), the weekly installment of the "Shoutout Sunday" series from Sanders Shorts (2013), to be published that same night before getting some rest.
The date in which the callback and the wedding take place is April 13th. It is interesting to note that, even though Thomas says "lucky number", both numbers contained in the date, 13 and 4 for April, are commonly associated with bad luck and ominous, foreboding circumstances, number 13 in the Western World and number 4 in the Asian world.
The poster for the episode is a spoof of the video game Phoenix Wright: Ace Attorney (2001) where Patton, wearing a lawyer suit, points at Deceit in the same fashion the protagonist of the video game does. Also, the typography in which "Bad Person?" appears on the poster is very similar to the popular "Objection!" screen from the video game.
Deceit's logo is the only one that was revealed in the actual episode without previous anticipation. All the rest of the logos had already been revealed out of universe when their first appearance in the series was released. The core Sides main logos were revealed three weeks before being shown in Sanders Sides: Fitting In (Hogwarts Houses) (2017), and Remus' logo, which hasn't made an appearance yet in the series, has been revealed in two live streams in June and July 2019.