Mac tries to look cool and dresses as Viggo Mortenstein from the Lord of the Rings movies.
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Charlie attempts to dress like a vampire when he puts on a Phantom of the Opera costume on Always Sunny.
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Artemis and Frank have a little lovers quarrel in costume during the Always Sunny Halloween-themed episode.
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A picture from the Halloween episode of It's Always Sunny episode, "Who Got Dee Pregnant?" Dee is pregnant and the guys try to figure out who the father is.
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Mrs. Mac and Mrs. Kelly move in together after Mrs. Mac burns her house down. Yes, we know this picture isn't from that episode, but look at them together.
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Mac and Charlie get stuck in the bottom of a drained pool in "Mac and Charlie: White Trash."
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Charlie plays a little hockey in his Philadelphia Flyers jersey on Always Sunny.
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Charlie is stuck diving to clean the boat when the gang gets a boat. Just another Charlie job.
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It's Always Sunny Quotes

I gotta get my pump on.

Mac

Dee: Who slams a door?
Frank: Babies.
Dennis: That guy has some real growing up to do. Have some repect for Christ's sake... I am legend.