Dugg For Bacon. Bacon, the candy of meat, is extremely popular on Digg.com, as well as the rest of the internet. It's hard to creatively comment on every bacon submission, so sometimes all you have to do is say, "DFB" and you're good to go.
Submission: "Bacon sandwich comes to KFCs"
First comment: "DFB"
Digger 1: Did you see that sub about bacon?
Digger 2: Definitely. DFB.