Rule 1: Under NO circumstances should the "poke" button be used to poke another guy.
Rule 2: Avoid using these words/phrases, unless you're making fun of people who use them...
"OMG!"
"totes (aborbs, gorg, ridic, etc.)"
"Sooooooooooooooo" or any word that gets unnecessarily lengthened due to adding repeating letters. (ie - hotttt, cuuuute, whaaaaatttt, geeeeeez, looooove, crazyyy, etc.)
"ohmygoodness" (phraseswithoutproperspacingshouldbeavoidedatallcosts)
Rule 3: Don't spend too much time on Facebook.
Question - "How do I know if I'm spending too much time on Facebook."
Answer - If you're spending more time on Facebook than you are boytalk, then you're spending way too much time Facebook. The following graph gives you an idea of how you should manage the time you spend on the internet.