-delete people from your friends on their birthday. I know every time I look at whose birthday it is and I see someone I haven't spoken to since high school or never really liked them in the first place, I delete them...what a great birthday present right?
-when someone you don't really like posts something about being sad or upset make sure you like that status. were all friends with some people that we don't really like but we still stay friends with them on facebook so we can either snoop on them or you just don't wanna be mean by deleting them. well when they post a status like "ughh I hate my life" or "boys always hurt me" make sure you like it...you'll feel better if you do. haha.
-when your single and you wanna make someone jealous..change your relationship status to 'its complicated'. everyone will see that your kinda with someone and word will spread like crazy. the person your trying to make jealous will still talk to you because your not officially in a relationship but believe me they will be deeply hurt if they truly like you..if they ignore you then they never really liked you in the first place.
-take horrible pictures of your friends and then tag them. there really isn't a purpose to it besides that it's hilarious to see them freak out when they get on and see hideous pictures of themselves haha..the best time to do it is when you know they won't be on facebook for a few hours because their at school/work because then that gives some time for ever one else to see them..lol