mary and johnny, n. — Green’s Dictionary of Slang

mary and johnny n.

also mary and johnnie

[play on Sp. which translates as ‘mary’ and ‘jane’]

(drugs) marijuana.

1935		A.J. Pollock Und. Speaks.
1944		D. Maurer in AS XIX:3 in Maurer (1981) 154/1: mary and johnnie. Marijuana (accidental rhyme in translation from Mexican Spanish).
1953		Anslinger & Tompkins Traffic In Narcotics 312: Mary and Johnny. A marihuana cigarette. Also the marihuana plant.
1960		J. Franklyn Dict. of Rhy. Sl.
1971		‘Hassan-i-Sabbah’ Leaves of Grass 1: Gauge / Mary and Johnny / Ganja.
1989		J. Morton Lowspeak.
2001		ONDCP Street Terms 14: Mary and Johnny — Marijuana.