Short for AW, or attention whore: a person who must have attention and will do anything for it. A-dubs often post updates on social networking sites just to get comments. These are usually updates that try to get you to feel sorry for them. The word "a-dub" can be used as code in front of people who don't know about Urban Dictionary.
> "Dude, that chick faked her death on facebook."
> "Wow, what an a-dub."
> "Hey, there's that a-dub I was talking about. She just can't get enough attention."
> "Bro, that's my sister!"
> "Oh..."