What makes a story have a funny ending?

The unexpectedness. For instance, if a hero is supposed to slay a dragon in a traditional way but instead ends up befriending the dragon and they open a tea shop together. It catches the reader off - guard.

A sad ending usually occurs when there's a sense of hopelessness or when all the efforts of the characters lead to a negative outcome. It could be because of fate, mistakes made earlier in the story, or external forces that are too powerful to resist.

Well, a story has a bad end if it doesn't resolve the conflicts in a satisfying way or if it ends on a really negative note that makes you question the point of it all. Maybe the heroes fail, or the moral of the story is just plain depressing.

A happy ending usually means the main characters achieve their goals or find true love and peace. There's a sense of closure and positive resolution.

Sometimes a story can be long and funny but have no clear moral or purpose. Maybe it's just a series of random humorous events strung together for the sake of entertainment.

A humorous ending usually comes from clever wordplay, absurd situations, or characters doing something comically unexpected. It might also be a play on common stereotypes or a reversal of expectations.

A happy ending often involves resolving conflicts, characters achieving their goals, and a sense of closure and satisfaction. It could be finding love, achieving a dream, or resolving a long-standing problem.

A bad ending could happen when the plot wraps up too abruptly and leaves many loose ends unanswered.

One important element is the build - up of tension. A story can create a really scary atmosphere, like in a haunted house setting. The characters are trembling with fear. Then, suddenly, the reason for all the spooky things is something really silly, like a mouse knocking things over. Also, the use of character reactions can make it both scary and funny. If a character overreacts to a normal noise in a really comical way at first, and then finds out it's harmless in the end, it gives that scary - but - funny effect.

Maybe it has some unexpected twists. For example, if the main character does something completely out of the ordinary.