It was revealed that Mr. Krabs gets manicures on a regular basis.
Patrick, Sandy, Gary and Plankton all don't appear in this episode.
This is the second time Mr. Krabs left one of his employees in charge of the Krusty Krab while he was away. The first was Squidward in "Squid's Day Off."
This episode aired in a week of new episodes called Deep Sea Danger Zone.
Delivery Man: (After dropping a bunch of things on Squidward after signing for them) Hey, my pen.
This is possibly a pun off of a scene from an episode of Scrubs. In it, a patient says to Dr. Dorean that she is ready to die. At that moment, a delivery man comes in and asks the doctor to sign for a "ton of bricks". After doing so, the man drops them on the doctor (reminiscent of the famous simile, "Hits you like a ton of bricks"). The delivery man then asks, "Can I get my pen back?"
SpongeBob's dances are similar to a Russian dance.