slang for LSD, a hallucinogenic substance synthesized from Ergot, a fungus which grows on rye. There are no known adverse physical effects, however, it may cause psychological problems and/or flashbacks. It is commonly distributed in liquid form, geltabs, sugarcubes and blotter-paper.
We're going to trip tonight, my friend but a 10-strip of acid.
by Jeff July 13, 2003
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The drug LSD-25. A gift from the gods which turns your brain inside out so that the innermost contents of your mind leak bizarrely into the world around you. An acid trip is a lot like an elaborate, extended waking dream which can sometimes turn into a nightmare without warning. Tripping on LSD is not about rainbow colors and being chased by flying pink elephants; it is a total elimination of preconceptions about the world and a profound distortion of reality which many casual users find too intense. Acid is extremely potent: a tiny dose of this drug can cause a life-altering experience. Depending on the dosage, you might expect things like getting lost in the curtains, seeing swarms of insects in the walls, or experiencing days between each minute of the clock.
Many people are not aware that the rivers in the biblical garden of Eden actually ran with acid and liquid ecstasy, and were bordered by shady groves of marijuana and fields of opium poppies growing in a soil of one hundred percent pure DXM.
by morning star March 24, 2008
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Acid is
a) the really strong drug, known as LSD
b) the stuff that burns your face off if you somehow manage to get it there during chemistry class.
"I got some acid yesterday and I'm still trippin"


"God, I can't feel my face because i got acid on it last class period!!"
by Jesse March 06, 2005
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A powerful psychoactive drug that breaks down subconcious barriers and will make your mind race through the corridors of human perception. While under the influence you'll often hear people say "Dude Im trippin so hard" many many times as a way to come to terms with the phenomena that is occuring. Visual filters in the brain are broken down to let raw, unfiltered data in. It is usually hard to talk and move while your under the influence, so a suggestion would be to find a comfy chair, put some Phish on, and perceive.
Scott: "Dude Im trippin on acid"

Matt: "Stop trying to put a word like "trippin" to the experience your having, just flow with it man, if you fight the ocean you will drown!!!!"
by Kevin Rollengardner January 13, 2007
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Acid , LSD is the most powerful psychadelic drug on the streets. It will make you experience things you have never thought would happen. As a comparison, some think it as a video game, but in a more broader sense it gives your mind a very trippy effect and you can begin to see trails, dots, inanimate objects doing human things. Boosts Creativity a lot.
Dude! I just got a 10 strip of acid man, Lets go drop the shit at my place tomorrow at seven..Bring Pink Floyd!
by Jeremy December 03, 2004
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A drug that can be really great, or really horrifying. Even experienced users can have a mind-frying bad trip that requires some time in a mental institution, and there is no rhyme or reason as to why this happens. Acid-heads like to brag about how many times they've taken the drug, but most of the time they are lying.
DooOO000d, me an a friend dropped acid last night and we got stopped by the pigs and got questioned for 10,000 years.
by The Dodger August 12, 2004
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LSD or acid (lysergic acid diethylamide) is the most commonly used hallucinogen (also known as psychedlics). It is considered a typical hallucinogen causing similar effects to other hallucinogens like mescaline, psilocybin (mushrooms), and ibogaine. LSD became popular in the counterculture of the 1960s and 1970s, but since then its use has been limited to people in the Rave or club scenes. According to the College Alcohol study, only 9.4% of Brown students have ever used LSD.

LSD is usually taken by ingesting small tabs of paper (frequently placed under the tongue) which have been soaked in the liquid form of the drug then dried. In rare cases it is taken in a liquid, gelatin, or tablet form. Sometimes a dose is soaked into a sugarcube. Doses range from 20 to 100 micrograms now, though in the 1960s they ranged from 100 to 200 micrograms. Because LSD is produced illegally, it is difficult to know how strong a dose is. The effects of the drug begin in about 30 minutes and last up to 12 hours. It can be very difficult to sleep if LSD has been taken in the last 6 hours.
acid is a very powerful drug,
but it is not as damaging as many people like to portray it.
by tjbcreations February 07, 2008
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