slang Marijuana. Somebody here definitely has some greefo—you can smell it in the air.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
greefoand griefo (ˈgrifo)
n. marijuana or a marijuana cigarette. (see also reefer.) Max had a soggy greefo in his mouth.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.