It's Always Sunny In Philadelphia Quiz: Dennis Reynolds - What's His Next Line?
Because of the implication.
In arguably the most iconic dark comedy of the last decade, if not all time, the darkest character of all is none other than the Golden God of Philadelphia himself, Dennis Reynolds.
Initially portrayed as the most sensible member of the Gang, Dennis' more questionable character traits have slowly bubbled to the surface over the years. Taking levels of narcissistic sociopathy to levels never seen before on television, much less a long running comedy, Dennis' levels of insanity have been steadily building over the years to the point where he is arguably the least stable character on the show.
Let's be real here; Dennis Reynolds is an absolutely unhinged individual. Whether he be chasing his sister around an Irish castle wielding an axe like Jack Torrance or threatening to add her to his collection of "skin luggage", the implications that Dennis is actually a real life serial killer are one of It's Always Sunny's longest running gags. The man has to have his tools, you know.
When he's not putting unsuspecting women through his D.E.N.N.I.S. system or confirming to the Gang that he is literally such a sociopath that he no longer experiences feelings, Dennis has provided an iota of hilariously dark soundbites over the years. How many can you remember?