The joke “What’s a cow’s favorite subject in school? Cow-culus” is a play on words, merging ‘cow’, an animal known for its distinct “moo” sound and presence in agriculture, with ‘calculus’, a branch of mathematics. The humor arises from replacing the similar-sounding part of ‘calculus’ with ‘cow’, creating a whimsical and imaginary school subject for cows. This type of joke is known as a pun, where the funniness comes from the similarity in sound between ‘cow’ and the ‘cal’ in ‘calculus’, despite their entirely different meanings. Puns often involve a playful twist on words to create amusing or unexpected connections.

This joke is another example of a pun, where the humor comes from the play on words involving the phrase “bear feet.” In this context, “bear” is a homophone, meaning it sounds like another word with a different meaning — in this case, “bare,” which means uncovered or exposed. The joke sets up an expectation by asking why a bear would wear slippers, an unusual behavior for an animal. The punchline humorously resolves this by playing on the similarity in pronunciation between “bear feet” (the animal’s paws) and “bare feet” (uncovered feet).

The joke is based on the concept of “depluralizing” a film title, which means taking a movie title that has a plural word in it and making that word singular.
The original tweet by @jameshannah gives the example of taking the movie “Jaws” and turning it into “Jaw.”
@benjaminjudge’s reply “A Crow on the Orient Express” is a play on the movie title “Murder on the Orient Express.” The joke here is that “murder” is not only a term for the act of killing someone but also a term for a group of crows. So, by “depluralizing” the group of crows (i.e., a “murder” of crows) to a single crow, the title becomes “A Crow on the Orient Express.”

A store that sells new husbands has opened in New York City, where a woman may go to choose a husband. Among the instructions at the entrance is a description of how the store operates:
You may visit this store ONLY ONCE! There are six floors and the value of the products increase as the shopper ascends the flights. The shopper may choose any item from a particular floor, or may choose to go up to the next floor, but cannot go back down except to exit the building!
So, a woman goes to the Husband Store to find a husband. On the first floor the sign on the door reads:
Floor 1: These men Have Jobs. She is intrigued, but continues to the second floor, where the sign reads:
Floor 2: These men Have Jobs and Love Kids. “That’s nice,” she thinks, “but I want more.” So she continues upward. The third floor sign reads:
Floor 3: These men Have Jobs, Love Kids, and are Extremely Good Looking. “Wow,” she thinks, but feels compelled to keep going. She goes to the fourth floor and the sign reads:
Floor 4: These men Have Jobs, Love Kids, are Drop-dead Good Looking and Help With Housework. “Oh, mercy me!” she exclaims, “I can hardly stand it!” Still, she goes to the fifth floor and the sign reads:
Floor 5 – These men Have Jobs, Love Kids, are Drop- dead Gorgeous, Help with Housework, and Have a Strong Romantic Streak. She is so tempted to stay, but she goes to the sixth floor, where the sign reads:
Floor 6: You are visitor 31,456,012 to this floor. There are no men on this floor. This floor exists solely as proof that women are impossible to please. Thank you for shopping at the Husband Store.

PLEASE NOTE:
To avoid gender bias charges, the store’s owner opened a New Wives store just across the street.
Floor 1: This floor has wives that love sex.
Floor 2: This floor has wives that love sex and have money and like beer.
The third, fourth, fifth and sixth floors have never been visited.