Like Dennis' famous transporter of gods car speech, Frank's iconic Man Cheetah costume and quote are also from the sixth episode of It's Always Sunny In Philadelphia's 10th season.

It’s Always Sunny in Philadelphia, Season 17, Episode 5, pushes Dennis and Dee’s limits while Mac and Charlie embark on a strange side quest.

After 20 years, Glenn Howerton is finally weighing in on the It’s Always Sunny in Philadelphia fan theory that his character, Dennis Reynolds, is a serial killer. “Look, I don’t want to ...

Image: FX Networks Screencap It's Always Sunny in Philadelphia S16E08 "Dennis Takes a Mental Health Day" 149/92 – looks like age is catching up with Dennis' blood pressure even though (SURPRISE!) ...

As “It’s Always Sunny in Philadelphia” enters its 17th season after nearly two decades, its team of writers/stars (Charlie Day, Glenn Howerton and Rob Mac) has become a well-oiled machine.

It’s Always Sunny in Philadelphia comes back with two episodes tonight, July 9, at 9 p.m. ET on FXX. New episodes will air on FXX every Wednesday at 9 p.m. through August 20. How to Watch It’s ...