Question: what is warota in japanese?
Answer: ワロタ orワロス (I Lol'd) It's a distortion of the word 笑う(warau), which means “to laugh.” Warota or warosu sounds like you attempted to say “warau” through your laughing, so the word got muddled. This word is also frequently written in katakana, but you may also see it in hiragana.