The introduction to the "Fiery Fist O' Pain" ad has gained popularity due to being laden with innuendo:
"IT'S BIG! IT'S PAINFUL!"
An image of SpongeBob and Patrick riding the small bump of a kiddie roller coaster is often used to make fun of slightly dark moments in non-scary games that are treated as really scary.
Bucket Sweet Bucket:
So Okay, It's Average: This episode is considered this by almost the entire fanbase. The episode has a neat premise, but it just ended up being forgotten.