I hate spam just as much as you do, so I'm sorry 
this is happening to you. however, mentioning 
such things as raping dogs, even in jest, is what 
can get you into this sort of trouble anna! chill 
out and hopefully it will stop. what the person 
responsible for this wants is a response like 
this from you, obviously, and you shouldn't feed 
them any more. I don't think revenge is the best 
idea either, it may get you into even more 
trouble. look out for yourself!

/Mina