All Take and No Give: Sarah. Oh god, Sarah. She is a lazy freeloader who has all of her money and her apartment provided to her by her sister, a hard-working nurse, and for this Sarah gives zero gratitude.
Black Like Me: Parodied. The plot of an entire episode involves Sarah getting into an argument over whether it's harder to be black or Jewish. Sarah spends the rest of the episode in Al Jolson-style blackface. When people react with disgust and outrage at the blackface, she mistakes this as actual racism towards black people, because of course her disguise is flawless, so it couldn't possibly be that. It's later revealed that the black man she got into the argument with spent the same amount of time in a false hooked nose, a yarmulke, glued-on side curls and a T-shirt that read "I <3 MONEY!" in faux-Hebrew text. Just like Sarah, he mistakes any hatred he gets for his costume as people hating on Jews.
Brainless Beauty: Sarah, though not so much brainless as outright insane (though she's still pretty brainless).
"How can someone this crazy have such nice skin!?"
Butt Monkey: Jay is this to Sarah, and sometimes to the other characters as well, especially Brian and Steve. Jay may come off as a little cocky but he never does anything remotely deserving of the treatment he receives from the other characters.
The Cast Showoff: Silverman's musical talents are naturally put to good use in many episodes.
Coming-Out Story: Sarah tries to help Steve's parents accept him for being gay. Of course she does this by explicitly describing his sex life and then giving them acid.
Condescending Compassion: Sarah with Fred Blorth, constantly shilling herself for helping him (she even brings it up on the ceremony on which Jay was celebrated) ostentatiously pitying him, and making fun of his mother on tv. The reason to help Fred in the first place was jealousy of Jay's spotlight for his charity.
Crying Wolf: Season 2, Episode 10, Patriot Act. Sarah attacks and accuses many bearded folks of being Osama bin Laden. Obviously, they're not. Laura grows tired of it, and demands that Sarah just control herself, no matter what she thinks she sees. Later, while riding her green sit-and-bounce,◊ Sarah actually does cross paths with Bin Laden, who is getting ready for a round of tennis.
Egg Sitting: Jay and Laura try to put Sarah through this to give her a chance to prove that she's capable of raising her baby herself. The egg rolls out of Sarah's hand and breaks on the floor the moment Laura lets go of it.
Frivolous Lawsuit: Sarah sues Home Alone. Not the makers of it, the movie itself. The judge points out that you can't sue a movie, which is an amorphous concept. She ends up winning the case anyways.
Good Girls Avoid Abortion: Parodied. One episode revolves around Brian and Steve attempting to stop pro-life activists from blowing up an abortion clinic, and it's shown that Sarah has had quite a few abortions herself.
Groin Attack: The first season finale ends with Sarah getting kicked in the crotch by some kid with leukemia.
Steve gets hit in the crotch over and over again after he says he's an atheist.
Hugh Mann: Subverted. Brian and Steve try to impersonate one another in an attempt to convince Brian's father that they did not change bodies after touching a Chinese dragon phone at the same time, but this fails, as he himself is actually a Chinese hooker who switched bodies with him through the same means.
Radish Cure: Inverted in the episode Muffin' Man when Steve tells Brian to drink a Tab soft drink Brian doesn't really want, Brian pretends to become obsessed with Tab. Steve reciprocates and it becomes an escalating war.
Screwed by the Network: Despite its immediate and continual success, networks rarely showed reruns of the episodes for very long, and after every season ended, all episodes and ads and discussion of the show would be dropped for months at a time. Fans were in a constant state of not knowing whether or not the show had been cancelled yet. After a third season, the show's episodes were quickly pulled away again ... only with a quiet message saying the show has been cancelled.
Sarah's attempts to queef are part of an episode's plot.
Undisclosed Funds: Non-monetary variation when Sarah writes down the number of sex partners she has had instead of saying the number aloud.
Played with in another episode when Sarah says, "Maybe this will change your mind", writes something on a piece of paper (presumably a monetary amount) and slides it over face down. When turned over it says: "Please!"