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Roflplantz is another term for marijuana. Roflplantz is typically used when you need to talk about marijuana in a normal conversation but the cops/parents are around.
Person 1 : You down for some Roflplantz later?
Person 2: Shut up my mom might hear you.
Mom : What are Roflplantz?
Person 1 : Oh, its just a new game that kids are playing.
by Brian22213 March 19, 2010
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