ㅋㅋ
kk
LOL — written laughter.
OriginImitates laughing sounds like 크크 or 키키; more ㅋ means bigger laughs.
When to useAny casual chat message.
CarefulA single ㅋ can read as cold or sarcastic; never in formal emails.
Examples
그 영상 봤어? ㅋㅋㅋ
Did you see that video? LOL