A person that will deactivate and activate their profile to suit their need to look at your profile... This makes it impossible for you to delete them from your friends list unless you catch them in the act... This person is a miserable excuse for a human being and has nothing else to do that to see what's going on in your life
Facebook stalker: So, I'm going to work at McDonald's for the rest of my life am I???
Normal Person: What??? How did you see that???
Facebook stalker: I reactivated my profile to see if you were talking about me! But don't try to delete me, cuz I deactivated it again.