Those people you always see studying in the hallways at school. Often found in large groups of people (called a clique) ,and normally seen reading, working with a laptop, or other electronic device, in front of, or near their locker's.
These people will often not give you their full attention if called upon
Ben: Hey what's up?
Ken: Just a second... (Finishes writing) Oh - uh, just studying for my test later today.
Ben: Oh. That's uh, cool. Wanna walk with me over to Timmies (Canadian Coffee shop)
Ken: Nah, bro. Sorry. Maybe another time? I really need to study.
Ben: Fine, go join the Ground People. Be a dumbass.
Ken: Nah bro. You're the dumbass. I'm the one that's gonna pass bro!