Well, you see, “rofl” comes from the English abbreviation “ROFL,” which means “rolling on the floor laughing,” or, to put it simply, “rolling on the floor from laughter.” Imagine someone laughing so hard that they just fall to the floor and can't stop. That is what rofl means: very strong laughter from something truly funny.
Rofl is mainly used on the internet or in chats when something really funny and nice (that is, cool or awesome) becomes the reason for a good mood. For example, your friend sends you a meme about a cat that hilariously falls off a chair, and you’re not just smiling, but laughing so hard that you want to say, “That’s rofl!” — this means that the situation caused you very strong laughter.
So, rofl moments are those times when something is so funny that you can hardly contain your laughter, and it’s not just nice, but a real rofl.
