Definition
An acute adverse psychological reaction to the effects produced under the influence of psychoactive substances, namely hallucinogens.
Origins
From bad + trip, first use appears c. 1966 in the periodical Life.
Also Said As
- bummer
- psychedelic crisis
Opposite In Meaning
- euphoria
How People Actually Use It
Normally associated with Salvia, 'Shrooms, and LSD (acid, you morons.), a bad trip is a "trip" that goes from peace and oneness to pure horror and evil. Hallucinations resulting from a bad trip often involve monsters, horrifying scenes, and paranoia/anxiety.
"Well, midway through the salvia I was to be introduced to the jolly king of the galaxy, but he pulled out my intestines with a rotisserie spit and giggled as I writhed in agony."
Source: Urban Dictionary