Maybe you should tell them what you feel they are doing that bothers you? Confront them, and have a talk. Playing pranks and giving them trouble will only come back to you, and things will get worse. Perhaps they don't even realize what they are doing is even bothering you?
Honestly I have had the room-mates from hell before too, and some people truly can not be changed. But don't think that starting a war will solve the situation.
Honestly I have had the room-mates from hell before too, and some people truly can not be changed. But don't think that starting a war will solve the situation.