Green’s Dictionary of Slang

cluck n.4

also clucker
[ety. unknown; ? link to cluck v.3 (1), i.e. the loquacity engendered by the drug]

(drugs) a user of crack cocaine.

[US]T.R. Houser Central Sl. 15: cluck A cainehead.
[US]NWA ‘Dopeman’ 🎵 If ya smoke caine, you’re a stupid motherfucker; / known around the hood as the schoolyard clucker.
[US]NWA ‘Dopeman’ 🎵 ‘Dopeman, please, can I have another hit?’ / The dopeman said: ‘Cluck, I don't give a shit’.
[US]UGK ‘Trill Ass Nigga’ 🎵 Cause cluckers don’t go for small dope.
[US]Ice Cube ‘Lil Ass Gee’ 🎵 Gettin his little dick sucked by the clucks.
[US]L. Stavsky et al. A2Z 21/2: You’re a clucker. That’s why we can’t trust you.
[UK]Sun. Times News Rev. 12 Mar. 3: His roomies were the ‘cluckers’, ‘toppers’ [...] and ‘fraggles’.
[US]ONDCP Street Terms 6: Cluck — Crack smoker.
Trek Life ‘Still Never Rains’ 🎵 Kick rocks to the clucks, and the stash I goes.
[US]C.D. Rosales Word Is Bone [ebook] The cluckers at the payphones by the giant donut-topped shop in Compton.