sticks-and-stones
Explanation
This comic takes the childhood saying "sticks and stones may break my bones, but words will never hurt me" and reveals it as a mechanism of emotional avoidance.
In the first panel, a man recites the familiar rhyme to his partner. In the second panel, the woman responds with a genuinely hurtful and emotionally meaningful statement: "Your narcissism is crushing our relationship."
In the third panel, the man gestures and says "See, no effect at all" -- completely proving her point. He is using the "words can't hurt me" mantra not as genuine emotional resilience, but as a shield to dismiss legitimate criticism. His demonstration that the words had "no effect" is itself a textbook example of the narcissistic behavior she just identified: he is incapable of hearing feedback about his own flaws and interprets his emotional numbness as strength.
The comic cleverly turns a children's saying into a diagnostic tool. The very act of claiming immunity to words becomes evidence of the personality flaw being described. His inability to be affected by her words isn't toughness -- it's the narcissism she's talking about.