What does fun have to do with jokes?

Happiness has something to do with jokes:

1)joy emphasizes joy.

[Britain] [America] [Germany]

Happy, happy, happy; A pleasant thing (or person); Success; Good luck;

Be glad of;

Happiness, let happiness;

Life is infinite, creating happiness.

Life is infinite, creating happiness.

Does your life bring happiness to others?

Have you ever brought happiness to others?

Have you found happiness in your life?

Have you found the joy of life?

2) Jokes emphasize the nature of jokes.

[British] [dk] [American] [D? o？ k]

A joke, a joke; Laughter, jokes;

Transitive verbs & intransitive verbs joke; Tease; Joke; Talk and play;

Do you remember that joke you told me last week?

Do you know the joke you told me last week?

Do you think this is a joke?

Do you think this is a joke?