It's used in online communication, especially in text messaging and chat, to indicate that something is funny or amusing.
It's important to note that "lol" is often used ironically or even without genuine laughter. In some cases, it might be used as a filler word or simply to acknowledge a message.
Here are some examples of how "lol" is used:
* "I just saw the funniest cat video ever, lol!" - This indicates genuine amusement.
* "You're so silly, lol." - This might be ironic or just a playful response.
* "Lol, I know right?" - This is used as a filler word or to agree with something.