I thought 헐 was just about the greatest thing, until my LP 언니 taught me this gem.
뷁 is used on the internet when there is no appropriate exclamation or word to describe the extent of one’s dissatisfaction. That is:
NOUN+은/는 좋지 않다 can become NOUN+은/는 뷁같다 or 뷁스럽다.
I imagine this is used kind of like “blehhhh” or “mehhhh” – general, noncommittal sounds of dissatisfaction in English. It’s embarrassing how often I use ‘bleh’/’meh’ to express myself at the cost of using more intelligent adjectives, and now I can do it Korean too! Not good. Heh.
So I tried looking up a few other things about this word (can you call it a word, even?) and found out that it originated from a lyric that went “왜 날 브레이크” from Moon Heejun (of H.O.T)’s solo song “I.” When said quickly, 브레이크 (‘break’) sounds a lot like 뷁. The funny thing is that netizens made fun of the song and his pronunciation by pasting his face onto 100원 coins (백원 = 뷁원). So mean! Check out the original song here (and I apologize for your ears in advance heh).
(Source)