Meaning of "N-N-N-G-M"

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N-N-N-G-Mㄴㄴㄴㄱㅁ#SNS#줄임말#밈/유행어

This is a neologism meme that captures the vibe of casually rejecting specific scenes—like "No, No, No, Gongman (Gongman)"—or drawing a clear line and responding with playful, snappy retorts.

"As soon as that scene came on, everyone started going N-N-N-G-M and laughed, saying, “No, no, no—it’s just Gong!”"