smartphone. These people will spend all day on their phone, mostly on bbm (blackberry messenger), an instant messaging application on the phone. These kind of people will be commonly known as baddict's, and they will rarely be separated from their screens. They become terribly annoying, as their phone will constantly buzz and ping with every new message received.
Lad 1: wait a second mate, just got to reply to my bbm Lad 2: allow that man, ur a baddict, get off your blackberry and stop being anti-social.