pieces of plant in dried marijuana that cannot be smoked, must be taken out in order to keep from making holes in the rolling paper/blunt wrap before smoking.
Be careful to take out the stems, they'll ruin all the hard work you put into rolling your blunt.
dude1 "this bitch ass nigga tried to sell me some stems an seeds"
dude2 "mane what you do?"
dude1 "punched that foo in his face an jacked all hi weed"
dude2 "word"