Why was DMT nicknamed the “businessman’s trip” in the 1960s?

“Businessman’s trip” is an old slang nickname for a DMT experience. Because the intense psychedelic effects of smoked or injected DMT typically last only 5–15 minutes, the term suggests that a person could take it during a short break and still return to work afterward—hence the joking comparison to a businessman squeezing in a quick “trip.”