Weedosoros is a magical poison, taught a Hogwarts School of Witchcraft and Wizardry. Little is known about it, other than that it was one of the many potions used by Severus Snape.
A particularly hideous variant of crack cocaine, Zombie Crack kills the body of the user, allowing them to be ridden by whoever has the magic to do so.
Zombie Crack was the result of a deal cut by certain executives at Unitol, a Chicago-based pharmaceutical company and the scorpion-loa Baron Zaraguin. It contained enchanted crystals that served as psychic foci for the mind-riding of the bodies.
However, once Baron Zaraguin was alerted to the fact that the white men who ran Unitol were using the drug to demean and degrade the young negroes of Chicago (who by descent should be Zaraguin’s people), he withdrew his magic from the crystals, and the drug reverted to normal crack cocaine.