The gang goes into therapy together on It's Always Sunny in Philadelphia. "The Gang Gets Analyzed" is the fifth episode of the show's eighth season.

It's Always Sunny in Philadelphia Season 8 Episode 5 Quotes

Mac: I gained and lost 60 pounds in 3 months.
Therapist: That's almost impossible.
Mac: Well, through God all things are possible, so jot that down.

Dennis: I have a background in academic psych from an Ivy League School. Not from... La Salle.
Frank: Sounds like a pasta dish.