The act of highlighting random sections of a written work, and writing meaningless notes in the margins. Typically done by high school students in the class before English.
Matt: Hey how long did it take you to read and annotate that article on Dante's Inferno?
Kevin: Ummmmmm.... article?
Matt: The one she gave us yesterday
Kevin: OH SHEESH YA'LL! That's due today?!
Matt: Indeed it is. It looks as though you are in a myriad of troubles.
Kevin: Don't worry about it. I'll just annofake it during lunch.