덕통사고
deok-tong-sa-go
Meaning
Unintentionally and suddenly becoming a huge fan of a celebrity or show, as if hit by a sudden traffic accident.
어느 날 갑자기 어떤 연예인이나 작품에 강렬하게 입덕하게 되는 현상.
Example
드라마에서 그 배우를 보고 완전 덕통사고 당해서 잠도 못 자고 있어.
I was totally hit by sudden fan obsession after seeing that actor in the drama, and now I can't even sleep.