S18 Ep. 3: The Gang Gets Diagnosed

It's Always Sunny in Philadelphia on FXX

S18 Ep. 3: The Gang Gets Diagnosed

Dennis (Glenn Howerton) and Dee (Kaitlin Olson) are diagnosed with ADHD, and even more shocking: Mac (Rob Mac) isn’t. As a result, the gang devise a plan to go back to school to prove their smarts.

TVMA | 2:19