Green’s Dictionary of Slang

(drugs) a (large) marijuana cigarette.

1992		Bentley & Corbett Prison Sl. 74: Hooter Another name for a marijuana cigarette.
1999		D. Looser ‘Boob Jargon’ in NZEJ 13 32: hooter n. Marijuana (joint).
2001		ONDCP Street Terms 12: Hooter — Cocaine; marijuana.
2024		D. Rucker Life’s Too Short 8: ‘I know what you need. Let’s fire up a hooter.’ We head into the house, to my room, and we smoke a blunt the size of an eggplant.