Druruk Kakkakppeng - BOYNEXTDOOR

What happened

BOYNEXTDOOR members invent a nonsense word, "드르륵칵칵뺑" (deureureukkakkakppaeng), while trying to name the group's new second cat. One top comment calls the clip the finale of a series, and another says they mistook the title's style for a SEVENTEEN video until member 상혁 (Sanghyuk) turned up, coining the fan portmanteau "캐럿원도어" (Caret-wondoor, blending SEVENTEEN's fandom name CARAT with BOYNEXTDOOR).

Why Koreans care

Korean pet owners often deliberately pick names containing hard "fortis" consonants like ㄲ, ㄸ, ㅃ — what Koreans call 된소리 (doensori, tensed/hard consonants) — believing pets pick up short, sharp sounds faster than soft ones; that is exactly the "센 발음" (sen baleum, strong pronunciation) condition the members set for the new cat's name. The hashtag 명리학 (myeongrihak, the traditional practice of reading a person's fate from their birth data) is itself the joke: in Korea, naming a baby or pet is sometimes handed to a 작명소 (jakmyeongso, professional naming-and-fortune office) that weighs how lucky a name sounds, so branding this chaotic on-the-spot brainstorm "운명의 명리학" (unmyeong-ui myeongrihak, "myeongrihak of fate") pokes fun at how unscientific the members' own process actually is.

In the Korean comments

Majority reaction is simply delight in repeating the invented word itself — one comment reads, "Ttukppak, deureureukkakkakppaeng, dudu, lol — they're just talking in a stream of consciousness," and another adds, "deureureukkakkakppaeng, lol, that's way too much lol." A fandom-specific thread notes cross-group crossover: one commenter admits, "I thought from the title it was a SEVENTEEN video, but I was surprised when 상혁 (Sanghyuk) showed up — 캐럿원도어 (Caret-wondoor, a CARAT-plus-BOYNEXTDOOR mashup)," while another writes, "Why do I see my ex-bias in my current bias... grrr, kkak kkak," using 최애 (choe-ae, one's current top bias) versus a former one. A minority voice cuts through the jokes with genuine sentiment: "I can't believe this is the last episode," flagging that the clip closes out a series.

What the words mean

A foreign viewer could take the "명리학" (myeongrihak, traditional Korean fate-reading based on one's birth data) hashtag literally and expect actual fortune-telling content — it is really just an ironic label slapped on a silly, unscripted cat-naming session. Likewise "드르륵칵칵뺑" (deureureukkakkakppaeng) is not a real Korean word or slang being referenced — it is gibberish improvised on the spot, and the flood of comments repeating it is about how absurd and hard to say it sounds, not about decoding any hidden meaning.