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1.
(New Zealand) Commonly available stimulant pills. The principal ingredient is benzylpiperazine (BZP).

The effects of BZP are largely similar to dextroamphetamine. Users report alertness, euphoria and a general feeling of well being. The perception of certain sensations such as taste, colour or music may be subjectively enhanced. The average duration is longer than that of dextroamphetamine, typically lasting 4-6 hours with reports as long as 8 hours.
Hey mate, pick up some party pills from the shop on your way over.
by tuna_fish June 06, 2006