Cut to 140 characters. Used when somebody is rambling and you'd rather they just get to the point. Also used just to shutpeople up.
Verbose fellow: Man, I was so totally bugging the other day for one of those big fat juicy burgers. You know, like the kind where the grease is just dripping off...
Rat fan (interupting): Twittified! Dude, just say you wanted a decent burger.
Verbose fellow: What? You mean to say that you think its ok to just interject in the middle of what somebody is saying simply because they have reached some pred...
Rat Fan (interrupting again): Twittified! Just say you think its rude.
Widespread use credited to Pastis in his Pearls Before Swine of early November '09.
The act of being proficient in the language of Twitter. Some people have achieved this, some have not, and some will never want to achieve this because they only like facebook.
Wesmosh is slowly becoming proficient in the #language of @twitter. Afick is not even close to becoming "Twitterized" at this moment in time.