Literal interpretation:
* People who are easily amused: Some people are naturally more prone to laughter than others. They might find humor in everyday situations, have a quick wit, or be easily tickled.
* Children: Children are often known for their infectious laughter and tendency to giggle at the silliest things.
* People in good moods: When people are happy and relaxed, they're more likely to laugh.
Figurative interpretation:
* Situations that are inherently funny: Things like slapstick comedy, puns, or unexpected events can be "prone to laugh" because they naturally evoke laughter in most people.
* Things that are ridiculous or absurd: The more outlandish something is, the more likely it is to be funny.
Ultimately, the answer to what is "prone to laugh" depends on your perspective and what you consider humorous.
Let me know if you have a specific context in mind and I can give you a more specific answer!