What it means
人の心とかないんか？ literally asks whether someone has any human feeling. As a meme phrase, it reacts to a cold, cruel, unfair, or comically heartless act. Friends may use it as mock outrage over a small offense; in a serious situation it can sound like a direct moral criticism, so context and relationship matter.
How to use it
Use it as a reaction to a seemingly ruthless choice, an unfair twist, or a friend’s cheeky act. It is often quoted or adapted online, with a deliberately dramatic tone. Do not use it to tease someone about genuine grief or harm; the phrase can be accusatory when the situation is serious.
Examples in conversation
Where it comes from
The phrase became widely recognizable as a line associated with Naoya Zenin in Jujutsu Kaisen. Baidu’s Simeji first-half 2026 trend survey placed it third in its “words” category and said it was being used for shocking or unreasonable events across social media, anime, games, and fandom. That survey polled 6,664 Simeji users aged 0–29; it is evidence of visibility in that sample, not a measure of all Japanese usage.
Related slang
Further reading
We use references to check meaning and background. Examples on this page are original.