1. What does it mean?
폼 미쳤다 combines 폼, form, with an exaggerated 'is crazy.' It enthusiastically praises a strong performance, sharp delivery, impressive appearance, or a run of especially good results.
Also written or said as pom michyeotda
2. The nuance
It is usually praise, but context can make it ironic. 미쳤다 here is slang exaggeration, not a mental-health assessment; choose a more neutral compliment in formal settings.
3. Examples
“오늘 라이브는 음정도 안정적이고 폼 미쳤다.”
Today's live singing was so steady—their form was incredible.
“발표 자료 정리하는 폼 미쳤다. 보기 정말 편해.”
Your presentation-design skills are unreal. This is so easy to follow.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.