30 Dope Facts You Didn't Know About 'It's Always Sunny'

Updated March 30, 2025 278.3K views 30 items

Voting Rules

Vote up the most interesting bits of Always Sunny trivia even real fans wouldn't know.

Put down your rat sticks, halt your Charlie Work, and get ready for some Always Sunny trivia and fun facts! Everyone’s favorite living examples of Cards Against Humanity are pretty open about a lot of things, from body secretions to trying to destroying Dee. But there are a few things about the It's Always Sunny in Philadelphia cast, show, and crew you may not know. For instance, there’s a real Mac’s Tavern, the show was inspired by Rob McElhenney’s night terror, Guillermo del Toro made a cameo, and the Game of Thrones writers want the gang to be in an episode. And that's only a taste!

There’s a lot of know about It's Always Sunny in Philadelphia. So huff your favorite glue and buckle up. Step into the It’s Always Sunny in Philadelphia behind the scenes and peruse the bowels of the operation, which will probably have something to do with brown.

1
Rickety Cricket Is a Writer and Producer
David Hornsby, who plays Cricket, has been producing and writing the show along with Glenn Howerton, Charlie Day, and Rob McElhenny since the beginning. Hornsby is the orchestrator of Cricket’s perpetual doom.

(Hornsby happens to be married to Emily Deschanel.)
16 votes
Interesting?
2
The Pilot Was Made for Just $200
When Sunny launched, it was made on a shoestring budget. They had a basic set, the cheapest equipment, and the skimpiest of pay for cast and crew. After DeVito came on board, heading into the second season, per episode budgets exploded.
11 votes
Interesting?
3
Lock Your Doors, the McPoyles Are Real
Rob McElhenney really knew these people in Philadelphia. Though the real McPoyles are not actually inbred or psychotic, they do exist. A large family of the same name served as McElhenney's inspiration when writing the characters.
11 votes
Interesting?
4
Charlie Day Writes Most of Those Weirdly Awesome Songs
Thanks to the brain of Day, along with the help of Howerton and McElhenney, the world now has “Dayman Nightman,” “Go F*ck Yourselves,” and a full musical The Nightman Cometh. Day makes a lot of it up on the fly and sometimes there’s spitting. Watch the maestro at work in the above clip.
9 votes
Interesting?
5
Mac and Dee Will Never Get Together
Real life married couple Kaitlin Olson and Rob McElhenney don’t often get paired up for scenes. According to Olson, their characters will never get together. “I think Mac and Dee are revolted by each other. In fact, you'll get a much more clear understanding of, how shall I say, Mac's lack of interest in women in [Season 9]," something fans have debated for years.
7 votes
Interesting?
6
Olson Actually Rammed Her Head Into That Car in Season Four
Olson and the gang do a lot of their own stunts because they aren’t afraid to jump in if there's a sacrifice to make for comedy. "They had a stunt double there, and I was like, 'Yeah, but you're going to watch [me] all the way out and then [the double] throw her body.' I think that's part of the acting. I don't want someone else to do it for me. So, yeah, I needed to see a chiropractor many times afterwards, but whatever, it worked out."
7 votes
Interesting?

Rickety Cricket Is a Writer and Producer

The Pilot Was Made for Just $200

Lock Your Doors, the McPoyles Are Real

Charlie Day Writes Most of Those Weirdly Awesome Songs

Mac and Dee Will Never Get Together

Olson Actually Rammed Her Head Into That Car in Season Four