This episode starts at the Krusty Krab, Mr. Krabs smells something weird. He goes to the cash register, where the smell is coming from. It is the smell of money. However, it does not smell like it usually does. Mr. Krabs can smell that the money is equal to $49.08, which means that 1 penny was lost. He goes crazy, while SpongeBob reassures him that one penny is not that much. Mr. Krabs, while giving a speech on his love of money, sees Mrs. Puff eating at the Krusty Krab, and instantly falls in love with her. When SpongeBob calls her a Mrs but says that she isn't married, Mr. Krabs asks what happened to Mr. Puff. The screen then shows a lamp shade made from a puffer fish being turned on, hinting that he was turned into a lamp. SpongeBob then says that she does not like to talk about it. After asking her out in the Krusty Krab, Mr. Krabs goes on a date with her to the Fancy! restaurant with imported music that night, but ends up spending a $100,000 in one night. The next time Mr. Krabs goes on a date with her, he leaves SpongeBob in charge of his wallet. However, when he goes to Mrs. Puff's House, he forces SpongeBob to buy a long series of increasingly unnecessary things for her such as chocolate and flowers, but gets mad at SpongeBob for spending his money after he buys the gift. Eventually, SpongeBob becomes fed up and after Mr. Krabs makes a snide comment about him, mouths off to Mr. Krabs and leaves. In the end, Mrs. Puff says she does not feel comfortable accepting all of the gifts and says she would rather go Dutch, gives Mr. Krabs some money, and kisses him, causing his eyes to form into a heart shape.
I can turn into a skyscraper!
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SpongeBob has cursed in front of Mr. Krabs before, in "Sailor Mouth." However, since no sound effects (such as dolphin chirps) were heard during his cursing this time, it may have been a different vocabulary.
This marks the first and only time Mr. Krabs fell in love with Mrs. Puff and fell in love with something/someone besides money.
In "Summer Job," Mrs. Puff asks Mr. Krabs, "Are you saying we should go on a date?" It is a likely reference to this episode, and may indicate that Mr. Krabs and Mrs. Puff broke up at some point.
SpongeBob talking gibberish to Mr. Krabs was meant to be swearing. This may imply that this episode takes place after "Sailor Mouth."
In European Spanish, SpongeBob says the same curse as the original, although in the Latin American Spanish version, it is babbling and every sentence ends in-ufala. At the end he shouts: "In the wallet of Mr. Krabs!"
Despite this episode dealing with romance, it aired after Valentine's Day 2002.
After Mrs. Puff was looking up SpongeBob's language and sets the dictionary down, when she gets up, the dictionary instantly moves to the pillow.
In Croatian dub, the episode name is "Zaljubljeni Klještić" or "Krabs in Love."
Mr. Krabs meets Mrs. Puff in this episode. However, in an older episode, "Life of Crime," he gets a gift from her. It is possible that it just said "from Mrs. Puff" and he never met Mrs. Puff until now.
SpongeBob and Krabs making the dotted shapes with their hands may be a reference to a scene from Pulp Fiction, in which the character Mia Wallace makes a square with her fingers to tell Vincent Vega to "not be a square."
When SpongeBob says, "It's all really confusing...," Mr. Krabs' nose turns light red.