A long time ago I read in some text file somewhere a great way to make someone miserable. Put a nice layer of powdered milk underneath their bed sheet. What happens is, while they are sleeping, their sweat soaks up the powdered milk. Not only does the milk stay in their pores, but the sweat makes it go bad, so this person will smell like rancid milk for weeks unless they go to the sauna every day to sweat it all out.
