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

Mac: Bro, when you tack on mass, you sacrifice flexibility. That's just a straight up fact
Charlie: That's insane. Touch your toes.
Mac: What am I a gymnast?

No I don't eat dragon, cause, uh, it's not a meal for peasants, it's a meal for kings, and I'm sort of a common man. But they don't eat us, it's a common misconception. They actually eat gold and treasure -- that's why they're always sitting on a pile of it.

Charlie