n. , slang , also used colloquially A disturbing or frightening experience, such as terrifying hallucinations, while under the influence of drugs; hence, by colloquial extension any bad experience in general. Why's John's face so distorted? He had a bad trip. How was your math exam? Don't mention it; it was a bad trip.
BAD TRIP
Meaning of BAD TRIP in English
American idioms English vocabulary. Английский словарь американских идиом. 2012