Related Clues:

• ''___ Hay'' (Aldous Huxley work)
• Marx Brothers-like
• Start of a trip?
• Heist, say
• Trippy letters
• The U.S. banned it in 1967
• Drug that can cause flashbacks
• Narc's haul
• Psychedelic of the 60's
• Hallucination drug
• Bit of impishness
• Like Charlie Chaplin
• Hallucinogen
• It may cause you to trip
• Daring exploit