Great art...good concept...
Two things...the music bores me...
I know it's a song about weed, but maybe something funnier like "Smoke Two Joints"...or if you're dead set on Rap, maybe Bone, Thugs N Harmony...
Also...I am extremely confused as to why you'd put tobacco in a joint.
Not only is that a waste of a cigarette, all it's gonna do is make the joint harsher and if it's good dope, it's going to end up tasting like crap.
(shrug)
Might be a cultural thing I'm not aware of, I guess.
Anyway...high points for me were the art and the execution, so...nice job.