Korean slang profile
머선129
meoseon129
A humorous spelling of ‘무슨 일이고’ (What’s going on?), expressing surprise and similar reactions.
A humorous spelling of ‘무슨 일이고’ (What’s going on?), expressing surprise and similar reactions.
- Expanded form
- 무슨 일이고무슨 일이고 (What’s going on?)
- Other spellings
- —
- Earliest source found
- Apr 14, 2022
- Documented trend period
- Not verified
This is the earliest source we have verified, not the date the term was coined.
01Examples, with English translations
- Example by Julimmal
갑자기 선물이 도착하다니 머선129야.
A present suddenly arrived. What’s going on?
02Documented history
- 2022-04-14The MBN source used the expression ‘머선129’.[1]
03Origin & word formation
The source explains it as ‘무슨 일이고’ (What’s going on?). Who first used it and when could not be established.
Evidence for the origin explanationMedium
The explanation and usage were compared directly with the evidence. Who first coined it and when it was first used could not be established.
04Sources
Original titles and links are preserved. An English translation does not replace the original source.
- 빠태·무물보·알잘딱깔센?…낯선 10대 신조어에 진땀 빼는 학부모 (MBN)Published Apr 14, 2022Original source checked Nov 13, 2026