The last part of a joint to be smoked, North London c.1970. Etiquette would be to refuse it, as you're likely to be burning cardboard.
by B&H October 2, 2006
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Oakland psychologist and psychotherapist Leo Zeff, "the Johnny Appleseed of MDMA", pioneered a variety of drug-assisted therapies with his patients. Zeff was no ordinary therapist. He once wrote about dancing with a Torah while tripping on LSD.

Dr Zeff was introduced to MDMA by Dr Alexander Shulgin. Zeff's response was wildly enthusiastic. He postponed his retirement and began to proselytise.

Dr Zeff introduced MDMA to hundreds of his fellow therapists across the USA. Zeff christened MDMA "Adam". The name was chosen because the drug typically strips away a lifetime of anxieties, self-protective inhibitions and ego defence-mechanisms - returning the user to an allegedly primordial state of innocence.
by funkspiel February 13, 2008
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Zeff = no lifer
Zeff is a no lifer, retard indian nigga with no friends and who's mom get fucked every night by stranger.
Omg look zeff is there run eww
by Thetdar5272rr June 3, 2023
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"doing the Zeff" means crashing into a parked car in the middle of the street in car racing.
"George made the Zeff in the 24h race"
by Salty_Toad July 23, 2022
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