Erratic, confused, or dangerous behaviour attributed to the smoking of cannabis; (more generally) a state of intoxication caused by smoking cannabis.
Origin
1970s; earliest use found in Liberty. After title of a 1936 film which portrays teenagers who experience various tragedies after being induced to smoke cannabis.
Definition of reefer madness in US English:
reefer madness
noun
Erratic, confused, or dangerous behaviour attributed to the smoking of cannabis; (more generally) a state of intoxication caused by smoking cannabis.
Origin
1970s; earliest use found in Liberty. After title of a 1936 film which portrays teenagers who experience various tragedies after being induced to smoke cannabis.