An alcoholic beverage, normally about 55-80% alcohol. Also contains thujone, found in wormwood, which is believed to cause hallucinations. Thujone over the years has had no evidence of causing hallucinations, even at high doses. Absinthe also contains minute amounts of thujone, meaning you would probably die from alcohol poisoning before you would start to hallucinate from the thujone, if it did cause hallucinations.
Drunk Guy: "I'm so fucked up off of this absinthe, and I'm still not seeing shit."
Sober Guy: "-_- use google and you'll find out it is not a hallucinogen."