Running gags

This is a complete list of recurring gags throughout the series.

Frequent Running Gags

 * Lincoln: Breaking the fourth wall to explain what's happening in each episode, and coming up with long operation names.
 * Lori: Texting or calling Bobby with her phone, or saying "literally".
 * Luna: Speaking in a British accent, or quoting song titles and lyrics.
 * Luan: Telling bad jokes for every situation.
 * Lucy: Always appearing suddenly, scaring her siblings or other people.
 * Lily: Saying "Poo-Poo".
 * Clyde: Talking about how beautiful Lori is and how he wishes to have a date with her, or acting like a robot and bleeding from his nose when he's around her.
 * Mom and Dad: Not showing their faces.

Fourth Wall Breaks not by Lincoln
Although Lincoln speaks to the viewing audience in every episode, characters in bold have been observed doing so as well while others look at the fourth wall, not speaking to the audience, but breaking the fourth wall nonetheless.
 * Space Invader: Lori
 * Undie Pressure: Lisa
 * Ties That Bind: Luan
 * Hand-Me-Downer: Colonel Crackers
 * Butterfly Effect: Charles
 * For Bros About to Rock: Luna
 * It's a Loud, Loud, Loud, Loud, House: Lynn Loud Sr.
 * Two Boys and a Baby: Billy, Clyde
 * A Novel Idea: Fisher
 * April Fools Rules: Luan
 * Cereal Offender: Lily
 * Come Sale Away: Lily, Neighbor with hose
 * Raw Deal: Lucy
 * Dance Dance Resolution: Ronnie Anne
 * A Fair to Remember: Flip
 * A Tattler's Tale: Lola
 * One Flu Over the Loud House: Clyde
 * Snow Bored: Lisa
 * Funny Business: Gary, Lisa, Luan
 * 11 Louds a Leapin': Luan

Lincoln's long operation names

 * Left in the Dark: Operation Distract My Sisters So That I Can Get to the TV First and Watch the Special Live Season Finale of ARGGH and Think of Shorter Name For This Operation.
 * Come Sale Away: Operation Pretend You've Never Met Me And I'm Really Interested In My Stuff So Other People Will Buy It And Also Think Of A Shorter Name For This Operation.
 * Homespun: Operation Paint The Peeling House To Give Mom And Dad The Greatest Anniversary Gift Ever And Also Think Of A Shorter Name For This Operation.
 * Promotional video for Lost Control: Operation Track Down Which Of My Sisters Has The Remote So I Can Watch My Favorite Show And Think Of A Shorter Name For This Operation.
 * 11 Louds a Leapin': Operation Scale the Fence and Retrieve Big Red Before Mr. Grouse Finds It and Takes It Into His House Forever and Also Think of a Shorter Name For This Operation

Innuendos

 * Making the Case: Lynn's sports certificate reading "Kicks A+", a subtle reference to the phrase "kicks a**".
 * Space Invader: Lynn: "You know, I'm noticing a complete lack of balls in this room." [Lincoln makes a discomforted face at that remark]
 * A Tale of Two Tables: Clyde: "Don't worry beautiful, I'll share my buns with you" to the cardboard cutout of Lori.
 * Two Boys and a Baby: The scene where Lily's dirty diaper is flung into the ceiling fan is a subtle visual pun on the phrase "sh*t hits the fan".