: The duo revisits their childhood traditions, only to realize they were horrific. Mac discovers his family's "South Philly tradition" was actually just his father breaking into neighbors' homes to steal gifts. Charlie learns that the many "Santas" who visited his mother on Christmas were actually her prostitution clients. Key Highlights & Iconic Moments

" A Very Sunny Christmas " (Season 6, Episode 13) is widely regarded as one of the show's most iconic and "best ever" episodes. Directed by Fred Savage, this special was originally released directly to DVD and Blu-ray in 2009 before airing on television in 2010. It serves as a dark, cynical parody of classic holiday tropes, questioning nostalgic views of Christmas by revealing the grim childhood realities that made the characters the monsters they are today.

The double-length episode follows two primary storylines as the gang attempts to find the "spirit" of the season:

: Enraged that Frank always bought their favorite toys for himself to taunt them as children, Dennis and Dee attempt to execute a Christmas Carol -style intervention. They recruit Frank's former business partner, Eugene Hamilton, to haunt him into changing his greedy ways.