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Insane Fan Theories About It's Always Sunny in Philadelphia

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Vote up the theories as insane as the gang.

Coming up with fan theories for your favorite show is almost as much fun as watching it. Some TV shows more than others, though, leave themselves open for discussion. Take It's Always Sunny in Philadelphia, for instance - an absurd, dark farce about five degenerates (Charlie, Dee, Frank, Dennis, Mac) who run a bar in Philadelphia is very fertile soil for harebrained, insane fan theories. 

Fan theories about It's Always Sunny in Philadelphia run the gamut, and there's no shortage of people on sites like Reddit bouncing them around. There's the one about Dennis being a murderer. Another It's Always Sunny theory involves figuring out the name of the gang's waitress frenemy. 

With 11 seasons behind it and three more on the way, there's plenty of room for more speculation and fan theories, especially on how it will end. Some fans think it might go the way of Seinfeld, a show to which it's been compared, with the gang in prison or on trial. Whatever theories you believe, there's probably a wackier one out there, so let's take a look at the craziest fan theories about It's Always Sunny in Philadelphia.