Welcome, Diddy! Sean Combs guest stars on this episode of It's Always Sunny in Philadelphia.
Charlie and the gang have a crisis of faith as his mother battles cancer on It's Always Sunny in Philadelphia. "Charlie's Mom Has Cancer" is the sixth episode of the show's eighth season.

It's Always Sunny in Philadelphia Season 8 Episode 6 Quotes

Dennis: Yeah, I gotta say - this is a strange place for a doctor's office. What's this guy's name?
Mac: Dr. Jinx.
Dennis: Dr. Jinx is the name of a monkey, not a man.

Frank: You're losing your mind. You're being scammed.
Dee: I'm losing my mind? How many pairs of shoes have you lost this month, Frank?
Frank: (looks down, sees his own bare feet) Three... four!