The gang tries to come up with a plan when Frank decides to retire on It's Always Sunny in Philadelphia. "Frank Retires" is the ninth episode of the show's tenth season.
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Let's do this! The gang gathers are prepared to seek revenge in this shot from the season finale.
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It's high school reunion time on It's Always Sunny in Philadelphia. You can imagine how well this goes, right?
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Uh-oh. Frank has that look in his eye. This can't be good for anyone.
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It's board game time! During a rainy afternoon, the gang comes up with this creation.
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A storm is approaching Philadelphia. Dee, Charlie and Frank react to that fact here.
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Hooray for Frank! He reunites with his brother on the 10/13/11 episode of It's Always Sunny in Philadelphia.
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Yes, folks, Frank has a brother! Who knew?!? Meet him here.
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Yes, Frank is the same size as the pageant contestants. You've gotta love that.
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Frank lays one on Alanna Ubach in this scene from the It's Always Sunny in Philadelphia season 7 premiere.
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Mac, Frank and Dee all get lost in the woods in the upcoming episode of It's Always Sunny, "The Gang Gets Stranded in the Woods."
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A picture of Danny DeVito in his hilarious role as the father figure, Frank Reynolds on It's Always Sunny in Philadelphia.
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It's Always Sunny Quotes

Dee: You've been really stressed so I thought I'd take you to a spa day. Just the two of us.
Charlie: A what day?
Dee: Spa day
Charlie: What is this word, spa? I feel like you're starting to a say a word and you're not finishing it. Spaghetti? Are you taking me to a spaghetti day?

Charlie: what is your spaghetti policy?
Dee: Are you hearing this? He doesn't belong in a place like this.