Similar to tool but these people aren't necessarily bad, there just kind of like zombies because they act like everyone else, and have simply no personality, or can be talked to for 2 minutes straight.
Used to describe something that just does not work at all.
George - "where did John go?"
Billy - "I don't know, he's kind of a dudd, he never says anything, and he kinda dresses like me..."
Guy 1 - "yo that Honda you gave me is such dudd. It doesn't even have an engine dude..."
Guy 2 - "don't call my shit dudd!!"