The absinth you see in things like the movie “Eurotrip” is the kind sold in old soviet republics, the reason people hallucinate when they drink it is because the laws in those countries are more lax, and it contains things like formaldehyde. You can’t get it in most western european countries like England, France, and Germany. The kind of absinth you can buy in countries like the U.S., England, Canada, etc. (countries with food safety laws) doesn’t contain any hallucinogenic ingredients, and is mostly an anise or black licorice flavored liquor (similar to Jaegermeister, but not as good-tasting)