Green’s Dictionary of Slang

j n.

also jay, j-bo
[abbr. joint n. (5c)]

1. (drugs) a cannabis cigarette, thus lazy J a cigarette that one has begged from a fellow-inmate.

[US] in Current Sl. IV:3–4 (1970).
[US]Newsweek 12 Feb. 68: The POW’s will quickly learn about ‘bummers’ (‘unpleasant experiences, especially with drugs’), ‘joints’ (‘marijuana cigarettes, jays, j’s, reefers’) and ‘munchies’ (‘to be hungry, usually after ingesting marijuana’).
[US]J. Sayles Union Dues (1978) 316: Roll us a couple of Js and don’t spill it all on the fuckin rug!
[US]E. Folb Runnin’ Down Some Lines 166: Hey lemme throw you out with a j. You try it, you never want nothin’ else.
[US]Eble Campus Sl. Spring 5: j, j-bo, jay – short for joint.
[US]L. Heinemann Paco’s Story (1987) 11: The younger, ‘hipper’ ones popped opium on the sly or sprinkled it on their jays.
[US]A. Rodriguez Spidertown (1994) 105: [He] sat beside her, grabbing his bag of smoke and rolling a jay.
[US]Snoop Doggy Dogg ‘Gin and Juice’ 🎵 A fat ass J, of some bubonic chronic that made me choke.
[US]L. Pettiway Workin’ It 129: I didn’t really smoke J’s.
[NZ]D. Looser ‘Boob Jargon’ in NZEJ 13 32: j n. A marijuana jount.
[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 94/1: J n. a marijuana cigarette [...] 106/1: lazy J n. a marijuana joint bludged from another inmate.
[UK]J. Baker Shooting in the Dark (2002) 326: He took another toke on the J.
[US]Hashbash.com 🌐 No, it is not legal (yet) to smoke marijuana at the HASH BASH. [...] While at this point we can not endorse this we can pass on some pointers to keep you from getting busted. Here they are: It’s not the puffin’ it’s that passn’..........Smoke your own, they watch for that ‘ear yer hit’ passing of the jay.
[UK]Independent on Sun. Books 13 Mar. 69/1: He skinned up a jay.
[US]T. Dorsey Riptide Ultra-Glide 61: Coleman twisted the end of the jay in his mouth.

2. marijuana.

[US]Schoolly D ‘P.S.K. What Does It Mean’ 🎵 Copped some brew, some J, some coke.

In compounds

In phrases