The (fictional) play that is the subject of much discussion and consternation in this episode, "Cocksucker in Chains," is a parody of the real and highly controversial off-Broadway (and later Broadway) play "Slave Play" by Jeremy O. Harris. The incident in the episode in which a white woman interrupts a Q&A session after a performance by yelling that the play is racist against white people is a close reproduction of a very similar incident at a talkback for Slave Play (when a video of that incident went viral, the woman was dubbed "Talkback Tammy" in the media). Harris not only made it widely known that he loved this episode's version of his play and himself, he also live-tweeted the episode on its first airing, providing real-time commentary like "[Cocksucker in Chains is a] great title tbh"; "Love that they kept the spirit of blaxploitation iconography for the play"; "The Talkback Tammy scene is word for word!"; and "If they put one more ascot on this man [the playwright character who is the episode's stand-in for Harris] I will sue."
It is said that Gabe Kovac is being sued by his former client in a civil lawsuit for ineffective assistance of counsel. This is a term which relates to representation of a defendant in a criminal case, not to civil cases. What Kovac is being sued for is legal malpractice.
The song "White Boys," parts of which are sung by Parody Play Liz to Liz is from the play and movie, Hair. In both, it is paired with the song "Black Boys." In the film, the song is sung by Nell Carter, Charlayne Woodard, and Trudy Perkins.