List of SpongeBob SquarePants Running Gags

Episodes

The Great Snail Race: Squidward's last name being mispronounced and/or typed wrong.
Friend or Foe?: Mr. Krabs being called Rag Boy and getting teased at with Plankton.
Something Smells: People or things running away when SpongeBob or Patrick speak.
Hall Monitor: Patrick screaming at everything.
I'm Your Biggest Fanatic: Kevin getting stung by a jellyfish and a member imitating a trumpet by going "wa wa wa."
Jellyfishing: Someone being stung by a jellyfish in multiple ways.
Sleepy Time: SpongeBob ruining a dream.
Rock Bottom: SpongeBob missing the bus.
MuscleBob BuffPants: SpongeBob's arms coming off after each of Sandy's exercises.
Gone: Something crashing through a wall.
Sing a Song of Patrick: People getting hurt or overly annoyed to hearing Patrick's "terrible" song.
Reef Blower: SpongeBob blowing something off of his yard and onto somewhere else where it is also a seemingly prominent flaw.
Squid's Day Off: Squidward running back to the Krusty Krab and nothing being wrong there.
Once Bitten: Everyone in Bikini Bottom screaming and panicking.
Arrgh!: SpongeBob and Patrick saying that Mr. Krabs is sweaty.

Something being destroyed, such as the Krusty Krab.
A riot being thrown when a group of people are angry at someone or something.
The town being destroyed when something affects the entire town, such as a "monster" or Mad Snail Disease.
A reference to the average episode's length: 11 minutes.
Fake time cards, such as "One Debt to Society Later" & "298 Frozen Patties Later".
A ton of police, cars and/or officers, chasing someone who broke the law (no matter how small the law is).
A reference to mustaches.
The police officers arresting people for strange reasons, such as not inviting them to a party & Eating Gummies of their own kind.
The Number 3 being mentioned.
People's skin being riped off.
Breaking the "fourth wall".
Things being misspeled.