relatively small joint of marijuana, meant to be smoked by one person before they go to sleep
tim: what'd you do last night?
bob: oh, just rolled a baby J and passed out.
tim: ahh, the usual.
A pretentious, egotistical jerk. Anyone who has an over-inflated sense of superiority.
Baby J thinks he is the shit.
A small marijuana joint or cigarette.
"Hey Zaid, how did you like that Baby J I hooked up last night?"
"That was a splendid experience. Thank you for the head change!"