One possible theme could be mystery. The act of knocking three times often creates an air of mystery, as it might be a signal for something unknown.
Connection is another theme. If knocking three times is a form of communication between characters, it shows a connection, whether it's between friends, family, or allies. For example, in a story where a child knocks three times on a tree trunk to let their imaginary friend know they're there. It's a way of strengthening their bond.
A theme of hope could also be present. If the three knocks are a sign of rescue or help arriving, it represents hope. For instance, in a story set during a war, a soldier trapped in a bunker hears three knocks on the door and knows it's his comrades coming to save him. This gives him hope in a dire situation.
I'm not sure which specific 'knock three times short story' you mean. There could be many stories with such an action in them. It might be about a secret code where knocking three times is a signal for something, like in a mystery adventure where it unlocks a hidden door or reveals a secret passage.
One possible theme could be the unexpected. A knock on the door is often an unanticipated event, so the story might explore how characters deal with the sudden intrusion into their lives.
One possible theme could be redemption. After two failed marriages, the character may find redemption in the third marriage, making up for past mistakes. Another theme could be growth. Through the experiences of three marriages, the character grows and changes.
One possible theme could be the fear of the unknown. Since the knock is something mysterious, it represents the unknown danger lurking.
It could also be a story of unexpected opportunity. The person who hears the knock is in a tough situation in life, like being unemployed or in a bad relationship. When they open the door, there is a stranger who offers them a job or some life - changing advice, thus starting a new chapter in their life.
Well, in a knock knock short story, the plot might be a bit of a mystery at first. Like, Knock knock. Who's there? Snow. Snow who? Snow use, it's all melted. Here, the person behind the door is initially unknown, and then the answer creates a humorous situation. This kind of plot is great for a quick laugh.
One possible theme could be loyalty. Since they are friends, they might show loyalty to each other throughout the story, like standing up for one another when faced with bullies or difficult situations.
Knock knock. Who's there? Boo. Boo who? Don't cry, it's just a joke.
Well, without more context, it's difficult to say exactly. It could be a story where a knock at a particular time or place is the catalyst for the plot. Maybe it's a knock that changes the life of the main character. For example, a knock on a window in an old, spooky house could start a horror - themed short story where the character discovers something terrifying inside the house.
I'm not sure specifically as there could be many stories named 'the knock'. It might be about a mysterious knock on the door which could lead to a series of strange events, like a character's encounter with an unexpected visitor or the start of a spooky adventure.