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1.
3 martinis and some pretzels. Commonly used to make the long half of the day a little more pleasant.
Boss: "Why are you in such a good mood?"

Employee: "Just came back from a business man's lunch."

B: "Oh... What did you have?"

E: "Ummm.... Some Pretzels."
by Kmadd December 14, 2004
 
2.
A trip on Dimethyltryptamine or the less commonly used 5-Methoxy-Dimethyltryptamine. DMT is widely regarded as the most intense psychedelic experience attainable through the use of drugs. Many users experience religious or philosophical epiphanies during a trip.

DMT is named The Businessman's Lunch or The Businessman's Trip because it fits neatly within a typical lunch break for a soulless cubicle-slave (corporate extortionist executives rarely limit themselves to an hour long lunch break, so they have the freedom to use drugs with significantly longer durations). Trips last up to an hour, but can be as short as twenty to thirty minutes. Several experiences with DMT are detailed in Alexander shulgin's book Tryptamines I Have Known and Loved.

Users should be wary, the effects hit the brain within a matter of seconds and quickly lead to a near-catatonic state. Make sure you have a friend nearby to make sure you don't drop the bowl or the lighter in your lap.
1: What if this is all just a ride, dude?
2: Why are you talking like that? Why were you in the bathroom for so long?
1: I just grabbed a quick Businessman's Lunch
by kickflipthecat September 22, 2007