Top Definition
Marijuana having the effect of making a person forgetful and mildly mentally retarded, much like the very amiable, yet admittedly slow, Forrest Gump.
Amos: Do you get the sense this healthcare reform proposal is going to screw the middle class?

Andy: I wish I had a crazy room with a little door that led to a chocolate room with a chocolate river, like Willy Wizonka."

Amos: You been smokin that Gumpweed dude.

Andy: Word
by The Cav August 15, 2009
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