A mental state typically exhibited by a Korean who is extremely displeased. This condition is signified by gratuitous violence accompanied by psychotic shrieking. Surrounding people and/or objects are usually left injured or damaged. Implied in the term is that such behavior results from ingesting too much kimchi.
"Dude, I can't believe you cheated on your Korean girlfriend. You must not know about kimchi rage."
"What's kimchi rage? ...Holy shit, is that my car on fire?!"