Someone who has a BlackBerry and thinks that they are better than everyone else. They are always on it texting someone or checking their e-mails. They just sit there and ignore everyone else. They look down upon people with other phones and always bring theirs up in conversations.
Herb: "OMG Danielle, did you know my BlackBerry can send picture messages via e-mail?!"
Danielle: "Umm... cool, enough with the BBtude, k? thnx!"