It's a slang term commonly used in Bruneian-Malay which means "Don't be a retard" or "Don't be a dumbass", a shortened version for "Jangan jadi paloi"

In Standard Malay, it means "Jangan jadi bodoh sangat".
Guy 1: Inda ku sabar aga ke NYC, liat Eiffel Tower (I can't wait to go to NYC, visit the Eiffel Tower)

Guy 2: Jan Paloi, Eiffel Tower tu di Paris (Don't be a retard, The Eiffel Tower is in Paris)
by Amazing LeeD January 8, 2018
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He was paloi because someone died in a car crash
by XhyponS June 26, 2023
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