When someone only reads half of something. Especially annoying during texting, leading to much confusion and miscommunication. Those jaded by this resort to phone calls for major planning, but this can be heavily resisted by introverts. They will not answer and then respond with a text, thus beginning a vicious cycle.
Bro #1: "Where you at?"
Bro #2: "At home chillin. What's up?"
Bro #1: "You're supposed to be picking me up for the game! -_-"
Bro #2: *rereads texts* My bad bro. I half read. Be there in 30.