Posted in: FX, Hulu, TV | Tagged: always sunny, It's Always Sunny In PhiladelphiaIt's Always Sunny in Philadelphia S18 Teaser: Mac's Sleepover PlansReturning on Monday, August 17th, here's a look at the latest teaser for FXX's It's Always Sunny in Philadelphia Season 18. Article Summary FX’s Always Sunny Season 18 gets a new teaser, with Mac’s sleepover plans adding another chaotic twist before the premiere. Always Sunny Season 18 Episode 1, “Frank Marries a Corpse,” sets up Frank and Sam’s wedding and Dee’s sabotage plan. Some Thoughts on That Season 18 Trailer & Overview…After 18 seasons, we can't believe that The Gang attending a Renaissance Faire hasn't happened until now. The contrast of Mac (Mac) trying to offer a history lesson while seeing his "karate" skills being countered by a LARPer's "forcefield backlash spell" was excellent.