an acid trip is what happens when ur on acid. that whole period of time when u dont know what the fuck is happening, hallucinations, etc...
"dude I had a serrious acid trip the other day"
When you are dazed and just plane zoned out. You can becomed this way if you are either stoned or if you are confused or bored.
1)Math class was so borring that it sent me on an acid trip.
2)Extacy sends me on one hell of an acid trip.