Details: This poster shows a girl sitting and holding a joint. Behind her is a large pot leaf. At the bottom it says Mary Jane.
Mary Jane is slang for marijuana, also known as cannabis, pot, etc. The major biologically active chemical compound in cannabis is THC. It has psychoactive and physiological effects when consumed, usually by smoking, sniffing or ingestion. Humans have been consuming cannabis since prehistory, although in the 20th century there was a rise in use for recreational, religious/spiritual and medicinal purposes