This page contains trivia for "Member Berries". Remember, trivia must be factual, provable, and it is always best to cite your source for not-so-obvious trivia. If you would like to dispute a trivia point, please discuss it in the article comments.
Kenny is only seen briefly at the beginning of the episode, and Stan plays a very minor role.
The lack of spectators for the girl's volleyball team games returns from Season 18's "Cock Magic", with the gym quickly emptied out after the pledge is over, with very few people viewing the actual game.
Butters appears to have made a full recovery from the injuries he received in "Safe Space".
A new preschool teacher is seen, suggesting Ms. Claridge has either been fired or quit.
References to Popular Culture
The revised national anthem mocks the controversy regarding NFL quarterback Colin Kaepernick's refusal to stand during the national anthem at his football games in protest of police brutality towards African-Americans.
J.J. Abrams' skill at "rebooting" franchises is mentioned, as seen with Star Trek and Star Wars. However, his reboot of the anthem is identical to the original, referencing a wide criticism that Star Wars Episode VII: The Force Awakens had many elements shared with the original Star Wars trilogy (1977-1983).
Cartman's motivational speech about women being funny is a reference to comedian Amy Schumer and her raunchy humor style.
The HBC News "Commander-In-Chief Forum" with Mr. Garrison is based on NBC News' "Commander-In-Chief Forum", which was hosted by Matt Lauer and had then-Republican presidential nominee, Donald Trump on to interview. It had aired one week before the original airing of this episode. 
The vote between 'Giant Douche' and 'Turd Sandwich' returns from Season 8's "Douche and Turd" with Mr. Garrison and Hillary Clinton taking the places of the Douche and Turd. Stan still shows frustration over the vote, not understanding the metaphor.