If you’re a dedicated fan of It’s Always Sunny In Philadelphia, you’ll easily understand why FXX decided to renew the series for a record-breaking 13th and 14th season. That said, thanks to the show’s continued presence on Netflix and Hulu, there always seem to be new fans joining the fold. If you’re only just starting to get to know The Gang, then it’s important to understand some of their quirkiest repeating ideas and characteristics (or personality flaws, depending on which way you look at them) that make them so hilarious to watch year after year. The show’s talented staff of writers clearly understand that bizarre concepts such as these could only work a second time on a show that has such a cult following, inciting devoted viewers to laugh along reminiscently at the jokes that worked so well the first time around.

With that in mind, here’s your guide to 10 Recurring Jokes From It’s Always Sunny In Philadelphia That True Fans Will Always Appreciate.

1 Charlie’s Love For Denim In episode one of the seventh season titled “Frank’s Pretty Woman”, Charlie and Frank are seen “boiling denim” in a large spaghetti pot, at which point Frank “burns himself on the rivet.” Charlie later encourages Mac to join him in wearing a Canadian tuxedo when meeting with the principal of an elementary school to offer their services, stating that the outfits were “the only call.” During the episode “Charlie Kelly: King of the Rats,” The Gang recreates an object from Charlie’s dream book called “denim chicken” (yes, a roasted chicken in denim shorts) which he excitingly recognizes almost immediately. Charlie is also quite fond of the range of motion allotted by Dennis’ cutoff denim shorts in “The Gang Gets Extreme: Home Makeover Edition,” which he later wears himself in the episode “Mac and Charlie: White Trash.”

2 Charlie’s Affinity For Bizarre Foods In the episode The Waitress is Getting Married, Mac and Dennis try to get Charlie back out into the dating scene by creating a Match.com profile for him, which turned out to be a lot harder than they thought. Charlie insists that they list “milk steak” as his favorite food, claiming that “she’ll know what it is.” During his date, Charlie orders a “milk steak boiled over hard” garnished with a side of jelly beans (raw) at Guigino’s against the advice of his friends. Charlie also loves cheese, will often make himself a “Grilled Charlie” (which is a peanut butter, chocolate and cheese sandwich) and eats cat food to fall asleep at night. We doubt you’d ever want to eat milk steak yourself, but if you do, here’s a WikiHow article on how to prepare the dish.

3 "Night Crawlers" This is Charlie and Frank’s secret game that they play together in their apartment, which Dennis infers “sounds like two grown men crawling around in the dark like worms” and Frank revealing to be exactly what it is during the episode “The Gang Gives Frank an Intervention.” [See more at You Remember Feelings, Right?]

4 "The Implication" This is rooted in the D.E.N.N.I.S. system, but as you know, Dennis is always creepily attempting to lure women into his room or to an enclosed, discreet location. He explains his tactics to Mac in the episode The Gang Buys a Boat, stating that the women are more likely to sleep with him “because of the implication” that if they say no, they’ll never be sure of what his reaction will be. Dennis attempts to use the implication again while trying to get women down into the bunker during the episode The Storm of the Century.

5 Mac Being Gay Mac is definitely gay, right? I mean, this is a theme that was first brought to light back during the very first season when Mac secretly begins dating “The Tranny” and runs throughout the series. The best part about the underlying joke is that The Gang is well aware of his sexual tendencies but Mac seems to think that nobody knows. Mac openly admits he is gay in the latest season during the episode where the booze-free Christian cruise ship that they’re on sinks. He takes it back, however, once he realizes he’s not going to die.

6 Fight Milk This is purely milk mixed with alcohol, described by Mac as the first alcoholic dairy-based protein drink for bodyguards during the episode “Frank’s Back in Business”, when him and Charlie pitch the product to an unsuspecting audience of investors. Mac later revives the drink in the episode titled “Ass Kickers United: Mac and Charlie Join a Cult” during which Dee finds it spilled all over her couch.

7 Paddy’s Pub Souvenir Egg Frank’s love for hard boiled eggs carries over into this bizarre idea for a souvenir for the bar, which he introduces in the “Paddy’s Pub: Home of the Original Kitten Mittens” episode and again brings it back in “The Gang Tries Desperately to Win an Award” episode, but this time he forgets to hard boil it, cracking it in his hands before asking the recipient if he wants him to “cook it up for him.” [Image via Giphy]

8 Chardee MacDennis The game of games. According to the storyline, The Gang cooked this one up when they were bored one day, putting their collective crazy minds together to create one of the most complicated drinking games ever conceptualized. Mac and Charlie’s team seems to somehow always lose (despite their opponents’ cheating), having their “game pieces” (which are really just damaged action figures) smashed by Dennis and Dee aka “The Golden Geese.”

9 The Nightman A fictitious and inadvertently homosexual character (and also nemesis of The Day Man) from Charlie’s dreams that he envisions into his own play (and episode) entitled “The Nightman Cometh”, in which The Gang performs before an audience of peers, unbeknownst to them, in order to help Charlie propose to the waitress (but, as usual, to no avail).