Mac has gained a great deal of weight for season seven. He shows it all off here.
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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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The gang tries to go caroling during a Very Sunny Christmas. Someone should tell them that's not acceptable at 4 am.
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Frank hides in a couch during his old company's holiday party as part of the Always Sunny Christmas special.
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Don't worry, See Dee is in the hospital for a good thing - she's delivering her child on Always Sunny.
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A picture of Sweet Dee's baby from the Always Sunny episode, "Dee Gives Birth."
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A picture of Sweet Dee and the gang waiting in the maternity ward while everyone's favorite pregnant bartender is about to give birth.
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Dee and Mac along with Frank (not pictured) get stranded in the woods on their way to Atlantic City.
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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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Frank tries to trick the gang into throwing him a surprise birthday party during "Charlie Kelly: King of the Rats."
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A picture of Lethal Weapon 5 from It's Always Sunny in Philadelphia with Mac as Murtaugh and Dennis as Riggs. Though the two swapped halfway through...
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Jason Sudeikis guest stars as an old member of the gang, Schmitty, who the kinds try to bring back in.
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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.