Nice to the Waiter: As the ending shows, turns out being a dick to the people who serve your food is a really bad idea.Montage Out: The episode ends with the restaurant owners getting back at the Yelp reviewers by tainting their orders with mucus and semen, while a song about the situation plays.Manchild: One Yelp reviewer who came to Whistlin Willy's wanted a table inside the ball playground.That Officer Yates is one of those reviewers, this can be taken not just as karma for how he acted in this episode, but the long overdue karma he kept avoiding in just about every other episode he appeared in.Laser-Guided Karma: Yelp reviewers have their food contaminated for the way they acted.
It's All About Me: All the Yelpers think they're the leading food critic when Cartman gives them a speech about leadership, completely missing the implication that Cartman is supposed to be the leader.Innocuously Important Episode: The episode has little to do with Season 19, but sets up one of the main plots of Season 20.I Ate WHAT?!: After finally having enough of Yelp reviewers abusing their (perceived) authority over them, all of South Park's restauranteurs secretly add a couple of special garnishes to the reviewers' food, taking glee in the fact that the patrons are none the wiser.They all hang on my every word, and I'm gonna use my power to finally get what this town really needs." The next scene shows Gerald working on his latest review, and he gives Sheila the exact same speech, demonstrating that all of the food critics think of themselves as leaders. Ironic Echo: When everyone at school is upset at Cartman for having the food critics destroy Whistlin' Willy's, Cartman declares, "I'm now the leader of thousands of people.Hypocritical Humor: Cartman shows disgust at other wannabe Yelpers for using their so-called power in order to get preferential treatment when he's clearly guilty of behaving a similar fashion.Hoist by Their Own Petard: The Yelpers get horribly stained and ruined meals as retribution for their greedy behavior.Cartman, however, takes the cake for being unrepentantly racist towards Davíd in an uncomfortable yet eerily realistic way. Hate Sink: A lot of the Yelpers are this, especially the usual suspects like Yates.Good Old Fisticuffs: Davíd intends to settle things with Cartman this way, much to the horror of Kyle, who knows that hurting Cartman will not end well for Davíd.Failed a Spot Check: At the end, the Yelpers don't seem to notice the blatantly obvious and huge stains of semen, mucus, feces, etc.Which they do since the badge helps restaurant owners know whose food to contaminate with mucus, semen, and urine. Exact Words: The mayor tells every Yelper that the special badge will ensure that they "get the treatment they deserve"."Eureka!" Moment: When Kyle and Davíd realize that the root problem with the Yelpers is that each one thinks everything going on is exclusively about them when Kyle calls out Cartman for having his army of followers without addressing him by name, and every Yelper behind Eric starts speaking as if Kyle addressed 'them'.Entitled Bastard: The people seem to think being Yelpers gives them an invite to act as such.The Dog Bites Back: The restaurants confront the selfish and unreasonable Yelpers by first banning them and second, tainting their food with mucus, semen, feces and urine, possibly even other disgusting substances as well.