Green’s Dictionary of Slang

1. (US) out of order, in a mess.

1958		W. Talsman Gaudy Image (1966) 221: You’re green, green as a mouldy dick.
1963		M. Braly Shake Him Till He Rattles (1964) 104: I’ll stick it for as long as it swings, but the minute it turns green, I’m splitting.
1997–2000		College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Green (adj.) 1. Class, phat, not wack (not bad). [...] 2. Messed up or not right. 3. Unfeeling, cruel.

2. (Aus. drugs) free of narcotic addiction.

2012

D. Whish-Wilson ‘In Savage Freedom’ in Crime Factory: Hard Labour [ebook] The smack was strong, and not because I’m green again. I can hardly lift my head.