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27 Random Bits of ‘It’s Always Sunny in Philadelphia’ Trivia That Will Become Your Brain’s Tools — And It Must Have Its Tools!

From a $100 pilot to the longest-running live-action sitcom of all time

27 Random Bits of ‘It’s Always Sunny in Philadelphia’ Trivia That Will Become Your Brain’s Tools — And It Must Have Its Tools!

May 05, 2025

Looking back, it’s easy to see why Rob McElhenney and Kaitlin Olson kept their relationship a secret for an entire year. It luckily worked out for the best, but man, that could’ve been quite the awkward workplace situation.

Wait, why are we giving away the facts in this pre-list blurb? Guess we just can’t help but to share the goods.

Here’s that and a couple dozen more behind-the-scenes tidbits about your favorite Irish Pub in Chicago. Sorry, Philadelphia. Oof, that was embarrassing.

27

Dennis Reynolds

CRACKED DENNIS REYNOLDS Another big night, fellas. 164 dollars and 87 cents. IT'S ALWAYS SUNNY IR This is the opening line of the entire series. Which is an incredibly normal line for someone who would evolve into one of the most psychopathic characters in TV history. — Source

26

Kaitlin Olson

Rob McElhenney loved his wife's commitment. It's Always Sunny in Philadelphia In Season 4's Who Pooped the Bed, McElhenney's now-wife Kaitlin Olson actually rammed her head into a car door. (The car was a rental, and not meant to be returned with a head-sized dent.) CRACKED — FX
PhillyVoice

25

Rob McElhenney’s Lesbian Moms

Rob McElhenney from It's Always Sunny in Philadelphia was raised by a lesbian couple. McElhenney plays the for- merly homophobic and now out-of-the-closet (and ripped) homosexual charac- ter, Mac. The show has used gay marriage to illustrate America's hipocracy re- garding marriage equality. CRACKED NOW YOU KNOW — On Top Mag

24

Fan Shout Outs

In 2018, Danny DeVito gave a fan a unique shout-out. OYS High school senior and big fan of It's Sunny in Philadelphia Alison Closs brought a cardboard cutout of Danny DeVito to her prom and posted about it on social media. A month later, DeVito posed with a cardboard cutout of her in Paddy's Pub in the show. NOW YOU KNOW CRACKED.COM — Source: 13 Movie-Related And Other Now-You-Know Facts

23

Danny DeVito’s Near-Death Experience

Danny DeVito nearly drowned on the It's Always Sunny in Philadelphia set. They had to weigh him down in an underwater scene, which meant he had a hard time getting back up (and unsurprisingly, he panicked). CRACKED.COM — Source

22

The Pilot

The pilot of It's Always Sunny only cost $100 That money went towards the cost of pizza for crew as well as camcorder tapes. BEHIND THE SCENES CRACKED.COM — LA Times

21

Chase Utley

CHASE UTLEY ALWAYS SUNNY IN PHILADELPHIA UTLEY or CRACKED.COM Mac writes a letter to hero Chase Utley: I would love to meet you someday. I know I can't throw as fast as you, but I think you would be impressed with my speed. I love your hair. You run fast.' Years later, Utley threw the first pitch to actor Rob McElhenney before an actual game. — USA Today

20

The UFC

Kaitlin Olson and Rob McElhenney are big fans of, uh, UFC fighting. When it's fight night, we are so excited, Olson said, adding that they got into it after some of the fighters involved became their friends. CRACKED.COM — Source

19

Game of Thrones Cameo

COMEDY NERD CRACKED.COM ROB MCELHENNEY HAD A BLINK-AND-YOU'LL-MISS-IT CAMEO ON GAME OF THRONES. Не got an arrow through his face, as one of the soldiers on Euron Greyjoy's ship that get killed when Theon launches an incursion to save Yara. — Source

18

Jordan Reid

Jordan Reid played Sweet Dee in the pilot Rob McElhenney's then-girlfriend Reid was replaced after the couple broke up by Olson, who later married McElhenney. BEHIND THE SCENES CRACKED.COM — Ramshackle Glam

17

Secret Fling

Kaitlin Olson & Rob McElhenney - The Always Sunny In Philadelphia stars met on set and kept their relationship a secret for a year- which was hard to do considering McElhenney was also living with co-star Glenn Howerton at the time. GRACKED.COM — source: Philly Voice

16

The Nightman Cometh

CHARLIE proposes musical matrimony IT'S ALWAYS SUNNY IN PHILADELPHIA CRACKED COM Nobody wanted to be in Charlie's The Nightman cometh musical but they also can't stomach the idea that other people would get the chance. You don't find out until the end, says Day, that this is just a really pathetic — GQ, YouTube

15

It’s Always Sunny in Moscow

There's a Russian knock-off show called It's Always Sunny in Moscow In an ode to the original, the bar is named Philadelphia, instead of Paddy's Pub. BEHIND THE SCENES CRACKED COM — Source: Philly Mag

14

Rob McElhenney

Rob McElhenney had a nightmare that inspired the show. Glenn Howerton describes, The show started as a night terror, basically. A late-night sweating station. BEHIND THE SCENES CRACKED COM — Source: EW

13

Mac’s Tavern

Rob McElhenney and Kaitlyn Olson own a real bar in Philly. It's appropriate the real-life couple's bar is named Mac's Tavern. BEHIND THE SCENES CRACKED COM — Source: Philly Voice

12

Longest-Running Sitcom

It's Always Sunny is the longest-running live-action sitcom. TDENNY MUFFLER CENE Despite this, it's only received three Emmy award nominations, all for stunt coordination. BEHIND THE SCENES CRACKED COM — Source: Emmys

11

The Waitress

Real-life couple Mary Elizabeth Ellis (The Waitress) and Charlie Day met because he won an arm-wrestling match. They were at a bar. Day and his friend both thought she was cute and arm-wrestled to see who see who got to talk to Ellis. Day won. BEHIND THE SCENES CRACKED COM — Source: Ellis' AMA

10

The Neverending Story

Co-Creator Rob McElhenney has no plans to end the show He said, I never understand why people leave shows... The show is what I dreamed of doing my entire life.' BEHIND THE SCENES CRACKED COM — Source: Philly Voice

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9

Young Danny DeVito

DANNY DEVITO WAS A SUAVE LOOKIN' GUY BACK IN HIS YOUNG JERSEY DAYS... AND HE HAS ONLY CONTINUED TO GET BETTER WITH AGE, LIkE A FINE WINE.

8

Charlie Day

13 Fascinating Nuggets Of Movie And General Trivia - Charlie Day turned down the sitcom Life on a Stick to do It's Always Sunny in Philadelphia. — Source: Business Insider

7

Youth Movement

DeVito told It's Always Sunny... creator Rob McElhenney he joined the cast because he wanted to be around younger people to stay fresh and relevant. T — Source: CinemaBlend

6

Glenn Howerton

CRACKED COM GLENN HOWERTON WAS REPLACED BY HIS SEX DOLL AT AN ALWAYS SUNNY EVENT. IT'S ALWAYS FXP UNNY IN PHILADELPHIA SEP2SF IT'S S IN Pt When Howert

5

Frank Reynolds

In season 2, we meet Dee and Dennis' father, Frank, played by Danny DeVito. IT'S ALWAYS ISUNNYIN IN PHILADELPHIA The addition to the gang happened bec

4

Danny DeVito

IT'S ALWAYS SUNNY IN PHILADELPHIA CREATORS REALLY DIDN'T WANT DANNY DEVITO. e Rob McElhenney says that after John Landgraf, the president of FX, told

3

Lack of Awards

It's Always Sunny in Philadelphia THE NINTH SEASON EPISODE THE GANG TRIES DESPERATELY' TO win An AWARD WAS A SARCASTIC LOVE LETTER FROM THE GANG TO

2

Charlie’s Changes

Charlie Kelly of It's Always Sunny in Philadelphia CRACKED.CONT started the show with no learning disabilities. Which makes 2UEXAY his sudden iZlbe il

1

Sweet Dee

Dee was suppOSED to be the stereotypical female voice of reason. IT'S ALWAYS SUNNYN IN PHILADELPHIA Kaitlin Olson wasn't having it, and at first tur

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