The third episode of It’s Always Sunny in Philadelphia Season 18, titled «The Gang Gets Tested,» had the most promising setup of the season so far. The idea of Dennis and Dee receiving ADHD diagnoses while Mac and Charlie do not seemed ripe for the show’s signature brand of self-absorbed chaos. Yet the execution never quite lives up to that premise, settling instead for a series of loosely connected scenes that feel more like filler than a cohesive story.
The episode opens with the Gang discussing Dennis and Dee’s new diagnoses, and the humor lands not because of the condition itself but because of how deeply the twins are in denial. It is a smart, understated way to approach neurodivergence, and the show deserves credit for starting an open, approachable conversation about ADHD. Mental health labels are often sensationalized on television, so seeing a sitcom treat the topic with a light touch is refreshing, even if the portrayal simplifies symptoms like distractibility for the sake of a twenty-minute runtime.
Charlie’s storyline is the clear highlight. Watching him explain his unique mental processes to a series of increasingly baffled psychologists channels the best parts of classic episodes like «Flowers for Charlie.» His earnestness, even when misguided, makes the scenes endearing rather than purely absurd. The moment when he is about to receive his diagnosis is particularly effective, as Charlie rejects the idea of fitting into any box, even one invented specifically for him. For many neurodivergent viewers, diagnosis can be a difficult but necessary step toward self-understanding, and Charlie’s radical self-acceptance feels genuinely inspiring. It is a thread worth revisiting in future episodes.
The rest of the episode struggles to find its footing. Frank’s adventure with an unsuspecting student named Jie feels like a wasted opportunity. His decision to drag a stranger into a break-in at the Dean’s office is framed as a lesson about not trusting random people, but the motivation rings hollow. Worse, Jie falls into the tired stereotype of the nerdy East Asian immigrant student who never parties, a choice that feels cheap rather than funny. The show would have been better served by sending Dennis and Dee into those scenarios instead, as their competitive streak against college jocks would have fit their characters far more naturally.
Meanwhile, Dennis, Dee, and Mac spend most of the episode too scattered to study for a course they all enrolled in together. Their struggles are meant to mirror the ADHD theme, but the scenes lack the sharpness that makes the show’s best comedy work. The result is an episode that feels comfortable and mediocre, conforming to the season’s early pattern rather than building on its fresh start.
Despite its flaws, «The Gang Gets Tested» succeeds in opening a dialogue about neurodivergence without mocking it. The show’s willingness to engage with these topics in a grounded way is commendable, even when the comedy around it doesn’t fully deliver. If future episodes can match Charlie’s storyline with tighter writing and avoid the lazy tropes that drag this one down, Season 18 could still find its magic.