Waiting for Big Mo

"Waiting for Big Mo" is the 10th and final episode of the fourteenth season of It's Always Sunny in Philadelphia.

Synopsis
Dennis and Charlie stand guard at the entrance to their laser tag base waiting to ambush the legendary "Big Mo," but Dennis begins to ponder the reasons they play laser tag and if their pursuit of a victory is worth their effort.

Starring

 * Charlie Day as Charlie Kelly
 * Glenn Howerton as Dennis Reynolds
 * Rob McElhenney as Mac
 * Kaitlin Olson as Dee Reynolds
 * Danny DeVito as Frank Reynolds

Co-Starring

 * Conlan Harveson as Big Mo

Trivia

 * This episode was inspired by the play Waiting for Godot. In addition, it served as an allegory for the show as a whole, with "Big Mo" being the changing tide of the culture, and "Green Base" being Paddy's Pub in the show's world and the show itself in our own.
 * The opening theme for this episode is from the 5th movement of Hector Berlioz’s Symphonie fantastique, which uses the Dies Irae motif that has featured heavily in Western music for centuries.
 * In Mac Day, the name of the bodybuilder that Mac is helping grease up is "Big Moe."
 * This is a bottle episode, taking place entirely in the Gang's base.
 * Here, Charlie is shown to wear barefoot glove-shoes to improve on his gameplay, similar to his over the top wetsuit getup in preparation for the waterpark.