A non-existant drug that is the opposite of speed, whose effects include: delayed reactions, randomly falling alseep, lack of motivation and or movement, and feeling as if you are living in slow motion.
A: Dude, I thought she was about to OD on slow, it took her 5 minutes to answer my yes or no question!
B: Shit man! That's bad! I need some slow, I've been way to productive lately.