crying weed, n. — Green’s Dictionary of Slang

crying weed n.

[SE crying + weed n.¹ (1d); ? its effects, although the tears are more likely to result from laughter than sorrow]

(drugs) marijuana.

1953		Anslinger & Tompkins Traffic In Narcotics 307: crying weed. A marihuana cigarette.
1977		S.N. Pradhan Drug Abuse.
2001		ONDCP Street Terms 7: Crying weed — Marijuana.